1250RT Cruise RPM and fuel mileage - BMW Luxury Touring Community
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post #1 of 40 Old Apr 6th, 2019, 1:19 pm Thread Starter
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1250RT Cruise RPM and fuel mileage

So... 2019 1250RT with 1500 km, the very first time I hopped on the bike it felt like it was revving too high, I was looking for 7th gear. During break in fuel mileage was pretty good and looked forward to twisting the throttle a bit and getting the bike up to interstate speeds. Having done that here is my experience... the bike is geared too low. Revs too high at higher freeway speeds and if you pick up the pace for any length of time I can use a tank of fuel in 175 miles. I’m not talking 120 miles an hour either but I do like to go... anybody else? An equaintance has a 2011 and same speed on the highway that bike is running a full 1500 RPM lower. Dealer says at this point no word from BMW on an issue. I have another friend with a new 2019 as well and he is not happy either. Range is not there with any pick up in pace.
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post #2 of 40 Old Apr 6th, 2019, 4:00 pm
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Re: 1250RT Cruise RPM and fuel mileage

Something doesn't sound right. How fast are we talking about?
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post #3 of 40 Old Apr 6th, 2019, 9:44 pm
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Re: 1250RT Cruise RPM and fuel mileage

I'm just past the 600-mile break-in and I just did a 210-mile round trip today on my R1250RT, 95% of which was at Interstate speeds of between 70 - 75 mph. The calculated fuel economy of the last tank was 43.8 mpg. The bike showed 44.5 mpg. Bike feels right to me up to about 75 mph. It does get a bit buzzy after 80 mph.

So far the bike is averaging 44.2 mpg:
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post #4 of 40 Old Apr 7th, 2019, 8:10 am
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Re: 1250RT Cruise RPM and fuel mileage

Quote:
Originally Posted by Shoptime View Post
So... 2019 1250RT with 1500 km, the very first time I hopped on the bike it felt like it was revving too high, I was looking for 7th gear. During break in fuel mileage was pretty good and looked forward to twisting the throttle a bit and getting the bike up to interstate speeds. Having done that here is my experience... the bike is geared too low. Revs too high at higher freeway speeds and if you pick up the pace for any length of time I can use a tank of fuel in 175 miles. Iím not talking 120 miles an hour either but I do like to go... anybody else? An equaintance has a 2011 and same speed on the highway that bike is running a full 1500 RPM lower. Dealer says at this point no word from BMW on an issue. I have another friend with a new 2019 as well and he is not happy either. Range is not there with any pick up in pace.
Your acquaintance has a 2011 "what"?

Yes, the RT's are geared too low. Especially if the new RT has all that much lower rpm torque.

I have gotten less than 175 miles on a tank! Running into a headwind at 89-90 mph ( gps speed ) nets me 34-35 mpg. What I don't like is the 5000 (+/-) rpms it turns at that speed. I think the RT would be a much more relaxed touring bike turning around 700 rpm less at 70 mph.
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post #5 of 40 Old Apr 7th, 2019, 8:46 am
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Re: 1250RT Cruise RPM and fuel mileage

If your friend's '11 is an RT he's running about 4,200 rpm at 75-80. You say you're running 5,700 rpm at that same speed? Interesting. I have a '18 so it is just a 1200, but from what I understand the transmission hasn't changed and I'm no where near 5,700 at the 75/80 mark when in 6th. Perhaps your gear indicator is off?
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post #6 of 40 Old Apr 7th, 2019, 9:17 am Thread Starter
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Re: 1250RT Cruise RPM and fuel mileage

I will get some more running time this afternoon but to answer some questions, what speed am I talking about? Interstate 15 speed limit is 80... thatís the speed the average vehicles are doing... minivans and econo boxes. Then there is the 90 mile an hour club. People that wanna get somewhere but donít want a ticket.... then there is me, moving through all of those vehicles steadily not crazily, steadily so I am in the club but passing here and there. Myself being passed all the time by fast movers. The bike is steadily 4500-5000 rpm cruise and the mileage is not good there. At all. Iím not suggesting it should be fantastic there... but from what I can glean so far, older RTís have higher or ďlongerĒ gearing in the final drive Iím guessing and that translates to about 1000 rpm lower on the highway. Iím looking for feedback is all! Love the bike, wish it wasnít geared so high and I will be looking for modifications to fix that or might go for a different bike.


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post #7 of 40 Old Apr 7th, 2019, 9:20 am Thread Starter
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Re: 1250RT Cruise RPM and fuel mileage

Quote:
Originally Posted by Grumpy_Squatch View Post
I'm just past the 600-mile break-in and I just did a 210-mile round trip today on my R1250RT, 95% of which was at Interstate speeds of between 70 - 75 mph. The calculated fuel economy of the last tank was 43.8 mpg. The bike showed 44.5 mpg. Bike feels right to me up to about 75 mph. It does get a bit buzzy after 80 mph.



So far the bike is averaging 44.2 mpg:


I think it will do ok at 70 but I stick with traffic at 80-90 and the mileage drops severely as you speed up...


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post #8 of 40 Old Apr 7th, 2019, 9:22 am Thread Starter
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Re: 1250RT Cruise RPM and fuel mileage

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Originally Posted by realshelby View Post
Your acquaintance has a 2011 "what"?



Yes, the RT's are geared too low. Especially if the new RT has all that much lower rpm torque.



I have gotten less than 175 miles on a tank! Running into a headwind at 89-90 mph ( gps speed ) nets me 34-35 mpg. What I don't like is the 5000 (+/-) rpms it turns at that speed. I think the RT would be a much more relaxed touring bike turning around 700 rpm less at 70 mph.


Agree 100% and Iím suggesting the 2019ís are even worse... I wonder if the parts guys could tell me if the gears or rear end are different part numbers


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post #9 of 40 Old Apr 7th, 2019, 10:06 am
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Re: 1250RT Cruise RPM and fuel mileage

According to the user manual, gear ratio and transmission output ratio is the same for all water boxers, 2014-2019. The only difference I could find is for 2017-2019 they called the transmission a Claw-shift 6-speed transmission with helical-cut splines.

RPM range should be the same.

2014-2018 Gear ratios.
Dog-Engagement 6-speed transmission with helical gears
1.000 (60:60 teeth), Primary transmission ratio
1.650 (33:20 teeth), Transmission input ratio
2.438 (39:16 teeth), 1st gear
1.714 (36:21 teeth), 2nd gear
1.296 (35:27 teeth), 3rd gear
1.059 (36:34 teeth), 4th gear
0.943 (33:35 teeth), 5th gear
0.848 (28:33 teeth), 6th gear
1.061 (35:33 teeth), Transmission output ratio
Gear ratio of final drive 2.75 (33/12 teeth)

2019 R1250RT
Claw-shift 6-speed transmission with helical-cut splines
1.000 (60:60 teeth), Primary transmission ratio
1.650 (33:20 teeth), Transmission input ratio
2.438 (39:16 teeth), 1st gear
1.714 (36:21 teeth), 2nd gear
1.296 (35:27 teeth), 3rd gear
1.059 (36:34 teeth), 4th gear
0.943 (33:35 teeth), 5th gear
0.848 (28:33 teeth), 6th gear
1.061 (35:33 teeth), Transmission output ratio
Gear ratio of final drive 2.75 (33/12 teeth)
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post #10 of 40 Old Apr 7th, 2019, 10:31 am
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Re: 1250RT Cruise RPM and fuel mileage

I guess that's the price you pay if you want to run at 90mph or faster.

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post #11 of 40 Old Apr 7th, 2019, 11:27 am
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Re: 1250RT Cruise RPM and fuel mileage

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I guess that's the price you pay if you want to run at 90mph or faster.
Yeah. That's what I thought too. Expecting the engine to run at some relaxed pace going that fast is just unreasonable. Maybe the OP could petition BMW (or any other motorcycle manufacturer for that matter) to add an additional double-overdrive top gear?
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post #12 of 40 Old Apr 7th, 2019, 2:40 pm
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Re: 1250RT Cruise RPM and fuel mileage

Run above 80 and any bike will get less mpg. Get some more miles on it so she is all broken in then see what happens, but running at 90 she will drink more
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post #13 of 40 Old Apr 7th, 2019, 2:42 pm
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Re: 1250RT Cruise RPM and fuel mileage

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Originally Posted by Shoptime View Post
So... 2019 1250RT with 1500 km, the very first time I hopped on the bike it felt like it was revving too high, I was looking for 7th gear. During break in fuel mileage was pretty good and looked forward to twisting the throttle a bit and getting the bike up to interstate speeds. Having done that here is my experience... the bike is geared too low. Revs too high at higher freeway speeds and if you pick up the pace for any length of time I can use a tank of fuel in 175 miles. Iím not talking 120 miles an hour either but I do like to go... anybody else? An equaintance has a 2011 and same speed on the highway that bike is running a full 1500 RPM lower. Dealer says at this point no word from BMW on an issue. I have another friend with a new 2019 as well and he is not happy either. Range is not there with any pick up in pace.
If you are riding at 90 MPH constantly, perhaps your stated 27 MPG (a 6.6 tank full gone in 175 miles) makes sense. I do 75 - 80 MPH and get 48 to 50 MPG. And being 1,500 rpm higher at same speed and gear as your friend...what is he riding - a Harley, which would be more than believable. What did you "hop" from when getting on this new 1250?
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post #14 of 40 Old Apr 7th, 2019, 7:51 pm
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Re: 1250RT Cruise RPM and fuel mileage

Quote:
Originally Posted by Shoptime View Post
... but from what I can glean so far, older RT’s have higher or “longer” gearing in the final drive I’m guessing and that translates to about 1000 rpm lower on the highway. I’m looking for feedback is all! Love the bike, wish it wasn’t geared so high and I will be looking for modifications to fix that or might go for a different bike...
That sounds about right for the gearing on my 2014 R1200RT. No difference in tires sizes, tranny gears or final-drive (same part #), between the 2014-2018 RT and the 2019 RT.

My 2004 R1150RT Oilhead was geared lower (numerically) for lower RPM at any given highway speed than my R1200RTW. Both got about the same fuel economy when riding at 80-90 mph, but the R1200RTW got better economy than the R1150RT if running around 70-75 mph.

My touring Ducati (ST3s) spins higher than that at those speeds as do most bikes unless you get into 1,400+ cc touring bikes. Sport bikes will be revving noticeably higher while Harleys, Indians, etc., will be reviving lower, but that is a function of where they make their peak power (HP and TQ).

This is fairly straightforward. The RT is meant to be a Sport-Touring bike and as such, when I'm travelling 90 mph I want instant throttle response if I need to accelerate out of a bad situation. It doesn't make peak TQ until 6,250 RPM and peak TQ at 7,750 RPM. IIRC, that will take dropping down 2-gears. The R1150RT reached peak TQ at 5,500 RPM.

One European publication is reporting acceleration times for the R1250RT compared to the predecessors as being:

80-120 km/h (roughly 50-75 mph) in 6th gear as being (seconds):
R1250RT=3.4
R1200RTW=4.4
R1150RT=6.5

80-120 km/h (roughly 50-75 mph) in 4th gear as being (seconds):
R1250RT=2.5
R1200RTW=3.1
R1150RT=3.5

They don't show anything higher (75-90 mph, etc.) but I suspect it would be a similar story. In 6th gear, that's a full second quicker for the R1250RT over the R1200RTW with the exact same gearing, etc., so at the exact same RPM, and R1150RT takes a whopping 91% longer to get to 75mph!!! That is a function of it's lower power and also the gearing having it loafing along. Even dropping down 2-gears to 4th the R1250RT is 0.6 and 1.0 (40% longer) seconds ahead. I know which I'd prefer. If you factor in 0.3 seconds reaction time to decide you need to downshift two gears (6th to 4th) on the 2014-2018 RTW and execute it, the R1250RT rider can stay in 6th and get there just as quickly. One quick downshift on the R1250RT would make it no contest no matter what the R1200RTW did and they are geared identically.

It may be, unfortunately, that you do have to consider what you are looking for if you want to cruise at 90 mph with the engine running around 4k or lower. Certainly, a K1600GT/GTL, H-D, Indian, Goldwing, etc., will do that, and be near the meat of its power-band, but not a 1,200cc - 1,250cc engine.

The K1600GT/GTL peak TQ is at 5,250rpm (1,000 rpm lower than the R1250RT and over 22% more). The last K1600GT I rode if memory serves me, was spinning at least 1,000 RPM lower at quick highway speeds than my R1200RTW. If I were doing Super Slab at 85-90 mph regularly, I would almost certainly have the K1600GT, it shines anyplace, but especially in that environment. Virtually all of my riding on Super Slab is at 10-clicks over the posted limit, but most of my riding is on secondary roads at 20-clicks over, so the RT so phenomenal for that and suits me perfectly for what how and where I ride.
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post #15 of 40 Old Apr 8th, 2019, 1:30 am Thread Starter
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Re: 1250RT Cruise RPM and fuel mileage

Hey thanks everybody for the awesome information and responses. Had a chance to run the bike for a hundred miles or so today on some secondary highways. This is where it shines... Rarely have to downshift for amazing power and pick up and handling and behaviour is second to none. It's doing 3500 rpm at 60mph and my questions you guys answered about the possibility of the 2019 being geared differently give me confidence in the engineering. It remains to be seen if I can keep the bike moving slow enough on interstates to not need to visit a service station at 175 mile intervals but if that's what it is then it is what it is. Maybe the K1600 is longer legged but it's too big so I will just slow down a bit if I want to have the range. Today it seemed very frugal on fuel even though I was deep into the throttle a lot. I have a lot more love for the machine today then I did yesterday! My personal feelings are I would like to have a lower gear ratio in the final drive. I come from Japanese bikes where downshifting once or twice to get power is the norm. Anyways thanks again everybody. I will let you know further thoughts as I am embarking on a 3000 mile journey down the baja in a couple days. Wish me good weather and favourable winds.
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post #16 of 40 Old Apr 8th, 2019, 12:27 pm
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Re: 1250RT Cruise RPM and fuel mileage

MAX parts list says the 2018 RT has a final drive ratio of:
33 74 8 544 974 RIGHT-ANGLE GEARBOX, SILVER - I=31:11=2,82
Note the 31:11 not the 31:12 mentioned in above post. I wonder why the owners manual has different data.
Personally I think the boxer engine works well above 4000 RPM, getting well into the torque curve and not stressing things by running too slow. The mileage figures given by BMW are way down near 60 mph, once you start going over low 70's all gas economy is out the window. I have not ridden the new shiftcam engine but some talk about vibration issues.

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post #17 of 40 Old Apr 8th, 2019, 1:42 pm
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Re: 1250RT Cruise RPM and fuel mileage

I have ridden the 1250 and have bought one, traded a 2014 RT for it. There is no vibration issue, the engine feels different and is possibly a little more vibey at the top end, but nothing worth worrying about or it being a negative, its a brilliant engine. My 2014 used to make my right hand numb until the engine had sone around 2k miles, then it loosened up. Had Harleys and classic brit bikes before the RT, so I am probably immune to vibration anyway
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post #18 of 40 Old Apr 8th, 2019, 6:11 pm
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Re: 1250RT Cruise RPM and fuel mileage

Quote:
Originally Posted by beech View Post
MAX parts list says the 2018 RT has a final drive ratio of:
33 74 8 544 974 RIGHT-ANGLE GEARBOX, SILVER - I=31:11=2,82
Note the 31:11 not the 31:12 mentioned in above post. I wonder why the owners manual has different data.
Personally I think the boxer engine works well above 4000 RPM, getting well into the torque curve and not stressing things by running too slow. The mileage figures given by BMW are way down near 60 mph, once you start going over low 70's all gas economy is out the window. I have not ridden the new shiftcam engine but some talk about vibration issues.
Beech. That was straight out of user manuals as you said. Thanks for the clarification, I will look into this more.

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post #19 of 40 Old Apr 8th, 2019, 7:15 pm
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Re: 1250RT Cruise RPM and fuel mileage

I do a pedestrian 75 to 80 at most unless there is need to push it while passing, but I suspect doing 90 will eat up that gas.

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post #20 of 40 Old Apr 8th, 2019, 7:25 pm Thread Starter
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Re: 1250RT Cruise RPM and fuel mileage

Yup just got back from a 250 mile day today... bike returns very good mileage that falls off STEEPLY as the speed increases. if you spend days 50-60 mile an hour canyon cruising not ripping but enjoying it will do over 300 miles maybe 315? But if you jump on an interstate and set the cruise at 90 you will not make 200 miles. Is what it is...


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post #21 of 40 Old Apr 8th, 2019, 8:59 pm
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Re: 1250RT Cruise RPM and fuel mileage

Quote:
Originally Posted by Shoptime View Post
Hey thanks everybody for the awesome information and responses. Had a chance to run the bike for a hundred miles or so today on some secondary highways. This is where it shines... Rarely have to downshift for amazing power and pick up and handling and behaviour is second to none. It's doing 3500 rpm at 60mph and my questions you guys answered about the possibility of the 2019 being geared differently give me confidence in the engineering. It remains to be seen if I can keep the bike moving slow enough on interstates to not need to visit a service station at 175 mile intervals but if that's what it is then it is what it is. Maybe the K1600 is longer legged but it's too big so I will just slow down a bit if I want to have the range. Today it seemed very frugal on fuel even though I was deep into the throttle a lot. I have a lot more love for the machine today then I did yesterday! My personal feelings are I would like to have a lower gear ratio in the final drive. I come from Japanese bikes where downshifting once or twice to get power is the norm. Anyways thanks again everybody. I will let you know further thoughts as I am embarking on a 3000 mile journey down the baja in a couple days. Wish me good weather and favourable winds.
I ride 85ish 2up/loaded and look for gas stations at 200miles all day long on a 15. I wouldn't worry about it to much.
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post #22 of 40 Old Apr 9th, 2019, 2:42 am
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Re: 1250RT Cruise RPM and fuel mileage

When I purchased my 1250 from the dealer it had 4.2km's on the clock. It was full of fuel and I rode it back to my home town 500km away. At the 370km mark I stopped and filled with fuel and the trip computer said I could do another 82km's.
My cruising speed was 115km per hour for the whole Trip and it was the fuel economy that impressed me even with a new tight engine.

No complaints about fuel economy here.

PS the engine is as smooth as silk until around 145km per hour and then a very faint tingle in the bars.
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post #23 of 40 Old Apr 9th, 2019, 3:40 am
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Re: 1250RT Cruise RPM and fuel mileage

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When I purchased my 1250 from the dealer it had 4.2km's on the clock. It was full of fuel and I rode it back to my home town 500km away. At the 370km mark I stopped and filled with fuel and the trip computer said I could do another 82km's.
My cruising speed was 115km per hour for the whole Trip and it was the fuel economy that impressed me even with a new tight engine.

No complaints about fuel economy here.

PS the engine is as smooth as silk until around 145km per hour and then a very faint tingle in the bars.
Did you do 500km cruising at 115km per hour, that doesn't sound like a great way to break an engine in. Thought your supposed to try and not ride constant speeds for long distances and vary the rev range. Or was that on non highway roads
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post #24 of 40 Old Apr 9th, 2019, 4:31 am
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Re: 1250RT Cruise RPM and fuel mileage

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Did you do 500km cruising at 115km per hour, that doesn't sound like a great way to break an engine in. Thought your supposed to try and not ride constant speeds for long distances and vary the rev range. Or was that on non highway roads
Get to vary it when riding through towns and out of the city etc.

Break-in period can be a bit subjective sometimes. Last 2 bikes I had including the Goldwing F6B have no break-in period.

I broke my Triumph rocket in by smoking the rear tyre off in the first 2500km and it ran like a Swiss watch for the next 30,000km before selling with no issues.
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post #25 of 40 Old Apr 9th, 2019, 5:27 am
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Re: 1250RT Cruise RPM and fuel mileage

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Get to vary it when riding through towns and out of the city etc.

Break-in period can be a bit subjective sometimes. Last 2 bikes I had including the Goldwing F6B have no break-in period.

I broke my Triumph rocket in by smoking the rear tyre off in the first 2500km and it ran like a Swiss watch for the next 30,000km before selling with no issues.
I agree, but I wouldn't spend long periods on a motorway at a fixed speed. Apart from that, I give it beans and try not to rev it too high or let it coast. But I guess if you live a long way from the dealer, unless you want to take days to get home, highways are the only option.
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post #26 of 40 Old Apr 9th, 2019, 4:19 pm
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Re: 1250RT Cruise RPM and fuel mileage

RT gear ratios by year. Pulled directly from downloaded owners manuals.

2005-2008 RT: (Hexhead)
1st gear = 2.277
2nd gear = 1.583
3rd gear = 1.259
4th gear = 1.033
5th gear = 0.903
6th gear = 0.805
Final drive = 2.62 : 1

2009-2013 RT: (Camhead)
1st gear = 2.375 (38:16 teeth),
2nd gear = 1.696 (39:23 teeth),
3rd gear = 1.296 (35:27 teeth),
4th gear = 1.065 (33:31 teeth),
5th gear = 0.939 (31:33 teeth),
6th gear = 0.848 (28:33 teeth),
Final Drive = 2.620 (34:13 teeth)

2014-2019 RT: (LC &Shift cam)
1st gear = 2.438 (39:16 teeth),
2nd gear = 1.714 (36:21 teeth),
3rd gear = 1.296 (35:27 teeth),
4th gear = 1.059 (36:34 teeth),
5th gear = 0.943 (33:35 teeth),
6th gear = 0.848 (28:33 teeth),
Final Drive = 2.75 (33/12 teeth)

The LC 1200 and 1250 GSs have a final drive ratio of 2.92. The GSs have always been geared lower (numerically higher) than the RTs. My R1250 RT is geared slightly lower than my 2005 RT was. For the 1250 4000 rpm is 71-72mph GPS indicated and the 2005 was about 74 I think. Not too much different. With 3700 miles on the clock the 1250 is so smooth above 70mph that it sometimes feels like I'm coasting. It is very smooth even if I'm bucking head winds.
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post #27 of 40 Old Apr 11th, 2019, 8:07 am Thread Starter
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Re: 1250RT Cruise RPM and fuel mileage

Halfway down the Baja with some treacherous roads behind us and super high winds... the RT continues to impress and I
continue to fall in love... mileage is good to astounding through slower sections and riding with a group of bikes the only ones that can hang with fuel range is a couple of GS 1200ís that have an extra gallon tank. Iíve come to realize that if the gearing was how I wished it to be when first taking delivery, that would be detrimental in some ways... Perspective has changed my mind and I take back my assertions that the engineers got it wrong. I needed the lower gearing going slow in first over terrain the poor bike was never designed to be through for one thing lol. Secondly, city stops and starts and overcoming the auto hill assist braking... (another post for another day) but the real smiles come when passing traffic in the 60-80 mph range and all you have to do is crack the throttle and you are always in the ďsweet spotĒ. Back to riding again this morning... if anybody has questions about the 2019 RT feel free to message.


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post #28 of 40 Old Apr 11th, 2019, 6:03 pm
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Re: 1250RT Cruise RPM and fuel mileage

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Originally Posted by Shoptime View Post
Yup just got back from a 250 mile day today... bike returns very good mileage that falls off STEEPLY as the speed increases. if you spend days 50-60 mile an hour canyon cruising not ripping but enjoying it will do over 300 miles maybe 315? But if you jump on an interstate and set the cruise at 90 you will not make 200 miles. Is what it is...
That's a good demonstration of one law of aerodynamics.....wind resistance increases as the square of speed.
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post #29 of 40 Old Apr 11th, 2019, 8:33 pm
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Re: 1250RT Cruise RPM and fuel mileage

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Originally Posted by beech View Post
MAX parts list says the 2018 RT has a final drive ratio of:
33 74 8 544 974 RIGHT-ANGLE GEARBOX, SILVER - I=31:11=2,82
Note the 31:11 not the 31:12 mentioned in above post. I wonder why the owners manual has different data.
Personally I think the boxer engine works well above 4000 RPM, getting well into the torque curve and not stressing things by running too slow. The mileage figures given by BMW are way down near 60 mph, once you start going over low 70's all gas economy is out the window. I have not ridden the new shiftcam engine but some talk about vibration issues.

33 74 8 544 974 with the 31:11 (2.82) ratio is "FOR VEHICLES WITH ALTERNATE CONVERSION RATIO (CODE: X585A)" - which is used on the RT-P to improve acceleration. (also on the R and RS)
The standard ratio is 33:12 (2.75)

Realoem.com has the R1250 parts fiche. The same FD ratios are used on the R1200RT and R1250RT.
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2006 R1200RT
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post #30 of 40 Old Apr 12th, 2019, 3:52 am
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Re: 1250RT Cruise RPM and fuel mileage

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.....and overcoming the auto hill assist braking...
Why are you trying to 'overcome it'? Just pull the brake lever again briefly to disengage the system and then ride away as though you never had it on.
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post #31 of 40 Old Apr 12th, 2019, 9:04 am Thread Starter
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Re: 1250RT Cruise RPM and fuel mileage

Yup it's just a learning curve. Fantastic feature but one must look down every time you stop to see if the green H is lit up so you know to squeeze the brake to release the hillstop before you take off. Not a big deal but every once and awhile the bike will activate hillstop when you don't notice it and occasionally if you aren't quick enough or use just enough throttle to lightly move away from the curb you might stall the bike. And I have a few times. A minor inconvenience as you quickly pull clutch and start bike but is embarrassing. I'm over it but it's worth a mention. Takes a bit of getting used to is all.
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post #32 of 40 Old Apr 12th, 2019, 10:14 am
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Re: 1250RT Cruise RPM and fuel mileage

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Originally Posted by Shoptime View Post
...but one must look down every time you stop to see if the green H is lit up so you know to squeeze the brake to release the hillstop before you take off. .
I think you will get used to it very quickly. You must be pulling that front brake lever MUCH harder than you need to when stopped normally and not wanting to engage that hill start. That is a fair old tug on the lever, and if you were braking with that much force, you would have the bike scraping it's nose.
Just ease the grip on that front brake when stationary. It takes very little force to hold the bike stationary unless you are on an exceptionally steep incline.
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post #33 of 40 Old Apr 12th, 2019, 10:42 am
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Re: 1250RT Cruise RPM and fuel mileage

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Originally Posted by Shoptime View Post
Yup it's just a learning curve. Fantastic feature but one must look down every time you stop to see if the green H is lit up so you know to squeeze the brake to release the hillstop before you take off. Not a big deal but every once and awhile the bike will activate hillstop when you don't notice it and occasionally if you aren't quick enough or use just enough throttle to lightly move away from the curb you might stall the bike. And I have a few times. A minor inconvenience as you quickly pull clutch and start bike but is embarrassing. I'm over it but it's worth a mention. Takes a bit of getting used to is all.
Picked up my 1250 this morning. First thing I did when I got home, was deactivate the auto Hill start control. So its now the same as it was on my 1200, if I want it I pull the brake leaver, but mostly I hold on the rear brake, just like I have done for 40 odd years.
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post #34 of 40 Old Apr 12th, 2019, 11:02 am Thread Starter
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Re: 1250RT Cruise RPM and fuel mileage

Yup Hill Start Control Pro. It automatically applies the brakes if it thinks the bike is on an incline either way. I might turn it off as well. I'll play around with it a bit more. If it annoys me more I'll shut er down. To get back on topic... once again if the bike was geared numerically higher it would overcome that easier when pulling away but I digress. If I could custom order the bike's gearing I would want to see the gears spread with a numerically higher first gear and numerically lower 6th with a numerically lower rear end. Anyways. They did a fine job hitting the middle ground.
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post #35 of 40 Old Apr 12th, 2019, 2:00 pm
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Re: 1250RT Cruise RPM and fuel mileage

I am a frequent 80-90 on a '18RT and the rpm do get up there. After this post I will check and see exactly where. But just in passing, I see my tach around 5k when I am hauling arses.

Perhaps what we need is personalized manufacturing: We fill out a form stating the dimensions and specs we desire on out motorcycle, then have BMW built a bike specifically for you.

That ought to make whinning on forums an obsolete phenomena...maybe not.
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post #36 of 40 Old Apr 12th, 2019, 2:24 pm
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Re: 1250RT Cruise RPM and fuel mileage

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Originally Posted by wethead View Post
I am a frequent 80-90 on a '18RT and the rpm do get up there. After this post I will check and see exactly where. But just in passing, I see my tach around 5k when I am hauling arses.

Perhaps what we need is personalized manufacturing: We fill out a form stating the dimensions and specs we desire on out motorcycle, then have BMW built a bike specifically for you.

That ought to make whinning on forums an obsolete phenomena...maybe not.
In my experience, 80 MPH on a 2016RT is 4500 RPM


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2016 R1200RT
2007 KTM 450 XC-W (10/17 - 5/18)
2005 R1200RT (2/2015 - 12/2016)
1987 K100RS (12/2015 - 12/2016)
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post #37 of 40 Old Apr 12th, 2019, 2:52 pm
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Re: 1250RT Cruise RPM and fuel mileage

Just as a matter of interests, the behavior of the 1250RT is very much the same as the wethead 1200RT, as far as mpg vs speed is concerned. Both models are very sensitive to how one handle the throttle, and once (as somebody else had said) you get over about 70 mph, the mpg takes a good nose-dive. Spirited riding will do the same thing. For you guys with the new 1250s, you can expect the mpg to get better as the engine and the drive train loosen up with use. Just to give you some ideas, here is a chart showing the mpg, calculated from actual volume of fuel use vs. mileage ridden:





The initial very low mpg is from the engine being very tight, when my '15 RT had just a few miles on the odometer. You can easily tell from this chart, as to how the engine loosened up over time. You can also tell which days I was feeling very "frisky" on my ride, and when I was just rolling along relaxing! There are a couple of days where the RT decided to hit and sustained the triple digits for a little while, and I bet you can tell which days that was! 122 was a number that was logged in my Nav V.
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Pad. Gajajiva
Solon, OH, USA

2015 R1200RT (San Marino Blue Met.)
2014 R1200RT (Quartz Metallic Blue - Returned to BMW)
2007 R1200RT (Sold!)


Once Upon a Time........
1963 Norton Dominator 650 SS
1960 Triumph Bonneville (T120)
1960 Triumph Thunderbird (6T)
1952 Triumph Thunderbird (6T)
1932 Triumph 500
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post #38 of 40 Old Apr 12th, 2019, 2:58 pm
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Re: 1250RT Cruise RPM and fuel mileage

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Originally Posted by casbar View Post
Picked up my 1250 this morning. First thing I did when I got home, was deactivate the auto Hill start control. So its now the same as it was on my 1200, if I want it I pull the brake leaver, but mostly I hold on the rear brake, just like I have done for 40 odd years.
Change don't come easy to human beings. And today, change is exponentially accelerated by technology such that instead of making life easier for us to live, it might actually be creating more psychosis and tension in the populace.

On the other hand, once adapted to new technology, it is difficult to regress to older behavior patterns. I would dread not having a cell phone, nor a laptop...at the same time, I am not sure if I want all my body parts replaced by gadgetry--as seems the direction of med-treatment in the future.

Consider these creatures growing up now: they probably won't even know how to use a key to start a car...heck, they 'll probably never have to actually drive.
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post #39 of 40 Old Apr 12th, 2019, 3:06 pm
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Re: 1250RT Cruise RPM and fuel mileage

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Originally Posted by PadG View Post
Just as a matter of interests, the behavior of the 1250RT is very much the same as the wethead 1200RT, as far as mpg vs speed is concerned. Both models are very sensitive to how one handle the throttle, and once (as somebody else had said) you get over about 70 mph, the mpg takes a good nose-dive. Spirited riding will do the same thing. For you guys with the new 1250s, you can expect the mpg to get better as the engine and the drive train loosen up with use. Just to give you some ideas, here is a chart showing the mpg, calculated from actual volume of fuel use vs. mileage ridden:





The initial very low mpg is from the engine being very tight, when my '15 RT had just a few miles on the odometer. You can easily tell from this chart, as to how the engine loosened up over time. You can also tell which days I was feeling very "frisky" on my ride, and when I was just rolling along relaxing! There are a couple of days where the RT decided to hit and sustained the triple digits for a little while, and I bet you can tell which days that was! 122 was a number that was logged in my Nav V.


I am interested to know how you generated this graph?
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post #40 of 40 Old Apr 12th, 2019, 5:51 pm
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Re: 1250RT Cruise RPM and fuel mileage

I use MS Excel to keep track of my data, and generate the chart with same.

Pad. Gajajiva
Solon, OH, USA

2015 R1200RT (San Marino Blue Met.)
2014 R1200RT (Quartz Metallic Blue - Returned to BMW)
2007 R1200RT (Sold!)


Once Upon a Time........
1963 Norton Dominator 650 SS
1960 Triumph Bonneville (T120)
1960 Triumph Thunderbird (6T)
1952 Triumph Thunderbird (6T)
1932 Triumph 500
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