Mixing PR4 and PR5 tires on my RT - BMW Luxury Touring Community
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post #1 of 21 Old Aug 7th, 2019, 8:44 am Thread Starter
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Mixing PR4 and PR5 tires on my RT

I've always used these Michelins and am not looking to change to another brand. I currently have PR3s on front and rear but they are ready to retire. According to a local bike shop, it's OK to mix PR4 and PR5 tires on the bike. (PR5 on the rear and PR4 on the front). The dealer tells me this is a recommendation from Michelin. Has anyone had experience with mixing tires like this? I

Ride Safe All
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post #2 of 21 Old Aug 7th, 2019, 9:49 am
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Re: Mixing PR4 and PR5 tires on my RT

For what it’s worth, I was advised against the PR5 until the GT version was released. The PR5 according to my local dealer isn’t suited to carry the loads like the GT does. The PR4 GT was specifically designed to meet the sport, and load touring needs of the RT. The GT version of the PR5 is coming soon they tell me


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post #3 of 21 Old Aug 7th, 2019, 9:19 pm Thread Starter
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Re: Mixing PR4 and PR5 tires on my RT

I sent a note to Michelin and got a quick reply. They specify that anything other than the same model of tire on the front and rear is not optimal and may be dangerous or present handling problems. They did mention PR3 mixed with PR4 but I assume any mix including the PR5 would be discouraged. Back to the dealer in the morning and will try to find out more about their stated "Michelin supported deal".
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post #4 of 21 Old Aug 8th, 2019, 5:43 am
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I sent a note to Michelin and got a quick reply. They specify that anything other than the same model of tire on the front and rear is not optimal and may be dangerous or present handling problems. They did mention PR3 mixed with PR4 but I assume any mix including the PR5 would be discouraged. Back to the dealer in the morning and will try to find out more about their stated "Michelin supported deal".
Cheers
Peter

Sorry but in my opinion this is a bunch of bunk from a company that wants to sell tires and over protect from civil action...I have ran different series...different model and different brand tires front and back...makes absolutely no difference...heck I run a car tire on the back and absolutely love it...been doing that for about 80 thousand miles....but hey...it's your bike and wallet....we are all different people and different riders...some people over think oil....some tires...I have been told on this forum and I agree that I over think preventative maintenance....I am sure that whatever tires you end up with you will love them after that first 20 miles or so and continue to do so until they start looking a little sketchy...ride safe and enjoy the ride
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post #5 of 21 Old Aug 8th, 2019, 6:10 am
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Re: Mixing PR4 and PR5 tires on my RT

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Sorry but in my opinion this is a bunch of bunk
I agree with this, but from a different standpoint. Nearly everyone I know is perfectly happy sticking with the same brand and model of tyre, but they wouldn't think twice about replacing (say) a worn our rear tyre with a nice new one, but leave the older front tyre on. This represents a much higher risk of mis-match when you have a super grippy new tyre (once the tyre has bedded in) and a severely worked older tyre.

Replacement tyres transform the ride and handling of the bike SO much, that I always change them as a pair for the sheer joy that new tyres give. So I end up changing my front tyres early every time. For me it is a small cost to pay for the quality of ride I get from newer tyres.
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post #6 of 21 Old Aug 8th, 2019, 6:14 am
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Originally Posted by Chieflonghair View Post
Sorry but in my opinion this is a bunch of bunk
I agree with this, but from a different standpoint. Nearly everyone I know is perfectly happy sticking with the same brand and model of tyre, but they wouldn't think twice about replacing (say) a worn our rear tyre with a nice new one, but leave the older front tyre on. This represents a much higher risk of mis-match when you have a super grippy new tyre (once the tyre has bedded in) and a severely worked older tyre.
Yes!!!....well said.....and all the tire brands would love it if we all bought new tires in pairs at 5000 miles...
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post #7 of 21 Old Aug 8th, 2019, 12:28 pm
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Re: Mixing PR4 and PR5 tires on my RT

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Replacement tyres transform the ride and handling of the bike SO much, that I always change them as a pair for the sheer joy that new tyres give.
I bet most all riders can relate to the notion that installing new tires universally transforms the ride--I certainly can. At least until the most recent tire changes I did. The first one was to replace a Conti RA3 GT w/ about 5800m on it that took a large deck screw to the hilt so I replaced it with a new Conti RA3 GT. I noticed exactly zero difference in handling w/ the new one. These tires retain shape very well compared to PR4GT, Angel GT, and Metz Z8. I left the front tire on since it had oodles of tread left at 5800m, and still retained excellent shape and was w/o cupping. FF to yesterday when I decided to change out the front which now had about 9200m on it w/ a new RA3 GT, thinking I'll get them back in sync for the next change as I do like to do them in pairs also. So I'll stretch the current rear tire out to the max, which will be around 10.5-11K miles I estimate, at which point I'll change the front at the same time which will have around 7K on it by then. Here's the deal: when I replaced the front yesterday I noticed no difference in handling--and this does not really surprise me because the front tire retained excellent new-tire shape compared to the others mentioned. So it could be that because the tires weren't completely spent when changed out I didn't notice the dramatic improvement, or not. These tires retain shape best of the bunch so far and they have no other faults either, as you all well know by now

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post #8 of 21 Old Aug 8th, 2019, 6:12 pm
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Re: Mixing PR4 and PR5 tires on my RT

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I sent a note to Michelin and got a quick reply. They specify that anything other than the same model of tire on the front and rear is not optimal and may be dangerous or present handling problems. They did mention PR3 mixed with PR4 but I assume any mix including the PR5 would be discouraged. Back to the dealer in the morning and will try to find out more about their stated "Michelin supported deal".
Cheers
Peter
The PR3 has less tread than the PR4. So...PR4 on the front and PR3 on the back works greart. I've done about 20K miles with this combination. In the rain, the front tire makes a wake for the rear tire to roll in, so less aquaplane danger for the rear.

PR4 and PR5? I'm not sure they're made the same or anything...so can't say the combo would work will...or that it would't.

I do agree with the statement that the GT tires are way better for RTs. I've got over 10K on my PR4 set. The bike still handles nicely at recommended pressures. PR4s are pretty great.

No experience with PR5 yet and won't buy them if they don't offer the GT version.

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post #9 of 21 Old Aug 9th, 2019, 10:05 am Thread Starter
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Re: Mixing PR4 and PR5 tires on my RT

Thanks for the input everyone!
I had a little more than 8K miles on the PR3s and there was still usable tread but I thought it time for new tires. I usually change both at the same time and have always thought to mix tire models could be risky .... hence my concern. I agree that there is a lot of misinformation out there and it's sometimes difficult to tell the fact from fiction. Apparently, in this case, the dealer was told at a sales meeting to push the PR4 / PR5 combination at a great price (perhaps to simply get rid of the older stock). Unfortunately, the salespeople didn't pass that on to their technical support people. But my conversation with the dealer ended well and I now have two PR5s installed on the bike. (At a price very close to that of the mixed tire option first offered.)

First Impressions .... I put a little over two hundred miles on the new tires in mixed weather. Sunny dry roads and through two thunderstorms with heavy rain. The ride and handling had to be better than that of the old tires but I was still impressed.

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post #10 of 21 Old Aug 9th, 2019, 8:33 pm
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Re: Mixing PR4 and PR5 tires on my RT

There is a video from a Michelin representative on youboob during some major bike show from earlier this year/late last year when the PR5's were introduced. Dude flat-out said there was no difference between the two (PR4/PR5).

That being said, I run a car tire because changing a rear tire at nearly $300/pop every 9,000-10,000 miles is a real drain on the wallet. I've run every major mountain road in the east and in all weather conditions with no issues, though I will say that I won't push it as hard in a turn as I would a MC tire.

Those who say that it can't be done shouldn't interrupt those who are doing it.

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post #11 of 21 Old Aug 10th, 2019, 7:37 am
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There is a video from a Michelin representative on youboob during some major bike show from earlier this year/late last year when the PR5's were introduced. Dude flat-out said there was no difference between the two (PR4/PR5).

That being said, I run a car tire because changing a rear tire at nearly $300/pop every 9,000-10,000 miles is a real drain on the wallet. I've run every major mountain road in the east and in all weather conditions with no issues, though I will say that I won't push it as hard in a turn as I would a MC tire.
You are the first person on this forum besides me that runs a CT...that I have seen...I wonder how many others out there?...25 thousand on this tire
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post #12 of 21 Old Aug 10th, 2019, 10:33 am
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Re: Mixing PR4 and PR5 tires on my RT

I don't ride enough for it to make a difference and it's not 300 for me to get a new rear tire either. I'd rather do it according to Hoyle.
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post #13 of 21 Old Aug 10th, 2019, 9:55 pm
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Re: Mixing PR4 and PR5 tires on my RT

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You are the first person on this forum besides me that runs a CT...that I have seen...I wonder how many others out there?...25 thousand on this tire
I think there are many others in here who do. Funny thing is that the guy who makes the adapter kit asked me how the bike runs with the CT on it; he makes the adapter but hadn't yet used it himself!

Those who say that it can't be done shouldn't interrupt those who are doing it.

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post #14 of 21 Old Aug 10th, 2019, 11:18 pm
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You are the first person on this forum besides me that runs a CT...that I have seen...I wonder how many others out there?...25 thousand on this tire
I think there are many others in here who do. Funny thing is that the guy who makes the adapter kit asked me how the bike runs with the CT on it; he makes the adapter but hadn't yet used it himself!
Yeah that's funny for sure...I didn't need one anyway...works fine without
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post #15 of 21 Old Aug 11th, 2019, 4:10 am
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Re: Mixing PR4 and PR5 tires on my RT

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You are the first person on this forum besides me that runs a CT...that I have seen...I wonder how many others out there?...25 thousand on this tire
I ran Dark Side on my RT for a lot of miles.

I chased a high caliber rider through PA and NY on a GS and he never lost me and I never felt out of shape on the car tire. No big deal and once you get use to it it is no different then any other tire yet others who have never tried it will tell you otherwise.

I do have the spacer and lug bolts if anyone is interested in tryng the Dark Side.

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post #16 of 21 Old Aug 12th, 2019, 12:38 pm
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Re: Mixing PR4 and PR5 tires on my RT

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... No big deal and once you get use to it it is no different then any other tire yet others who have never tried it will tell you otherwise. ...
I wonder if they're related to the people who have never split lanes, but insist on telling you how crazy and dangerous it is to do so?


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post #17 of 21 Old Aug 13th, 2019, 1:56 pm
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Re: Mixing PR4 and PR5 tires on my RT

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I wonder if they're related to the people who have never split lanes, but insist on telling you how crazy and dangerous it is to do so?
You know it. California really spoils you with lane sharing. Before doing it myself, I thought those people are CRAZY... Until the first time you personally do it and realize it is very safe when done properly. (As with so many other things in life.)

I wish more states would adopt some sort of policy for lane sharing. Heck, even if just a policy for stoplights like “When the majority of traffic is below 10 mph, a motorcyclist may advance as far as they are safely able to do so when approaching a traffic control device with at least two lanes going in the same direction.” IE: Slowly move to the front of the line at stop signs and stop lights. Really helps avoid the “smooshed between vehicles” scenario.
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post #18 of 21 Old Aug 13th, 2019, 7:56 pm
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Re: Mixing PR4 and PR5 tires on my RT

I just had a set of PR4GT's installed on my '12 RT and man did the original tires need replacing! My RT had extremely low mileage on it when I bought it and rode her back to NC from Atlanta, lets just say that the first 100 miles or so it was quite squirrelly! Nothing like new tires! My mechanic stated the same thing about the PR5, not being available in GT version for the RT. The PR5's apparently sticky and great just not getting the mileage as compared to the GT's.

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post #19 of 21 Old Aug 13th, 2019, 10:08 pm
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Re: Mixing PR4 and PR5 tires on my RT

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I wonder if they're related to the people who have never split lanes, but insist on telling you how crazy and dangerous it is to do so?

Or refuse to pass on a double yellow line and castigate as hooligans all those who do...
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post #20 of 21 Old Aug 14th, 2019, 6:08 am
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I wonder if they're related to the people who have never split lanes, but insist on telling you how crazy and dangerous it is to do so?

Or refuse to pass on a double yellow line and castigate as hooligans all those who do...<img src="http://www.bmwlt.com/forums/images/BMWLT_2015/smilies/tango_face_devil.png" border="0" alt="" title="Devil" class="inlineimg" />
I spent three weeks riding (wondering) around in Mexico...they "apparently" allow splitting and lane sharing down there...it was strange at first for me from Missouri...but I got used to it and loved it....split at lights or backups...and when traveling on two lane and you come up behind a car..they almost immediately ease over to the right as much as possible...then most turn on the left blinker...signaling for the bike to pass...even with oncoming traffic!!!!!....so I guess the people down there are taught to actually use the mirrors...wow!!!...most here have no clue what's going on behind them...only the cell phone and sometimes what is right in front...
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post #21 of 21 Old Aug 14th, 2019, 8:41 am
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Re: Mixing PR4 and PR5 tires on my RT

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“When the majority of traffic is below 10 mph, a motorcyclist may advance as far as they are safely able to do so when approaching a traffic control device with at least two lanes going in the same direction.” IE: Slowly move to the front of the line at stop signs and stop lights. Really helps avoid the “smooshed between vehicles” scenario.
This I support for myself and did this whenever I could while living in California, especially getting up to the front of stopped traffic due to road work or what have you to get ahead of trucks mainly, but won't lane split while traffic is moving on the whole. It violates my chief strategy for avoiding mishaps and that is simply proximity to other vehicles. Heck when I pass anyone I get as wide as I can and move past them as quickly as I can so as not to be exposed to proximity any longer than I have to. You may avoid getting smooshed front to back between vehicles while lane splitting, but you're open to lateral smoosh with every pass between vehicles--it's just too close for comfort for me. It will seem 'safe' right up until it isn't. There are other strategies to avoid getting smooshed between vehicles which I employ. I understand in wretched metro traffic the temptation would be extreme but I avoid riding in wretched metro traffic anyway!

But hey, more power and success to those who like to lane split.

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