Quick question about tire pressure - BMW Luxury Touring Community
 
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post #1 of 12 Old Apr 3rd, 2008, 9:28 pm Thread Starter
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Quick question about tire pressure

Just checked the tire pressure before taking the bike out of winter storage. Its about 27psi, I know its low from storage and tires will loose pressure. This is the 1st year Ive ever checked after my local mechanic let me have it for riding w/ such low tire pressure. I didnt realize this was so dangerous. My question is how bad is it to ride w/ low pressure?

I want to ride into work tommorow morning, I leave so early (0530) that no service stations are open to get air in them locally. Is is gonna be safe to do a 28 mile ride w/ low tire pressure?


Tom
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post #2 of 12 Old Apr 3rd, 2008, 9:47 pm
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Re: Quick question about tire pressure

Sounds like a good excuse to get an air compressor!

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post #3 of 12 Old Apr 3rd, 2008, 10:47 pm
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Re: Quick question about tire pressure

Quote:
Originally Posted by joevano
Sounds like a good excuse to get an air compressor!
+1 on the air compressor. You can get a good little Craftsman model for less than $100.00 that will come in handy for more than just the scooter.

Every pre-ride check should include air pressure. Over time, you won't need to pull out the guage - you'll know the sound of the properly inflated tire when you bang it with a heavy object (e.g., a hammer).

Brian
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post #4 of 12 Old Apr 3rd, 2008, 11:06 pm
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Re: Quick question about tire pressure

Quote:
Originally Posted by ahpd1992
Just checked the tire pressure before taking the bike out of winter storage. Its about 27psi, I know its low from storage and tires will loose pressure. This is the 1st year Ive ever checked after my local mechanic let me have it for riding w/ such low tire pressure. I didnt realize this was so dangerous. My question is how bad is it to ride w/ low pressure?

I want to ride into work tommorow morning, I leave so early (0530) that no service stations are open to get air in them locally. Is is gonna be safe to do a 28 mile ride w/ low tire pressure?


Tom
Can you say Ford and firestone

I feel for you Tom I was berated for not having the recommended tire pressure. I now check it every week or every few days. I will have to say I am surprise how often I need to add air.

Treat yourself to an air compressor.

G-Glove
2003 Silver LTC
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post #5 of 12 Old Apr 4th, 2008, 4:13 am
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Re: Quick question about tire pressure

I rely on the TPM in my K1200GT. I check the TPM reading on the display each time I ride.

Despite its "temperature compensation" feature, the TPM goes up by 1-2 psi during a normal ride in a typical So. Cal. 15 mile commute.

The TPM has been very consistent since I bought the bike. It closely matches a cheap digital tire gauge. I watched it and compared it with the tire gauge for several months to make sure.

I ride year round. Tire pressures drift slowly down, but it takes many weeks. When I add air, I usually fill the tires two psi over the recommended pressures, and let them slowly drift down over time. On a K1200GT, the recommended pressures are 36 psi front and 42 psi rear.

The first time the TPM shows either tire with 2 psi below the recommended pressure (normally at cold start in the morning), then I refill both tires at the next refueling. The last time I needed to refill the tires was more than two months ago.
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post #6 of 12 Old Apr 4th, 2008, 5:27 am
 
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Re: Quick question about tire pressure

Quote:
Originally Posted by ahpd1992
My question is how bad is it to ride w/ low pressure?
I can't think of a single reason why you'd want to ride on tires with low air pressure. Not only does it promote improper wear, but it's also dangerous, especially on a heavy bike such as the LT. Lower pressures cause the tires to heat up excessively, which can cause delamination and/or tire breakdown. Do yourself a huge favor and keep an eye on those pressures. (At least once a week, if not more.)

Quote:
Originally Posted by XMagnaRider
I rely on the TPM in my K1200GT. I check the TPM reading on the display each time I ride.
I wouldn't rely on just the TPM as much as you do. Checking tire pressures once a week with a good tire guage only takes 1 minute.

I would like to add that my GT's tires don't loose air pressure like my LT's did. My LT's tires needed air weekly. The GT, probably once a month. (You gotta love a lighter bike!)
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post #7 of 12 Old Apr 4th, 2008, 6:16 am
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Re: Quick question about tire pressure

Didn't you ever get one of those emergency car kits as a gift? One of those with the little compressor that plugs into your cig lighter in the car. They may not be fast, but they will air up your tire so you can ride. I almost threw one away because I have a couple of real compressors. I them decided to toss it in the trailer I pull with the bike for emergency situations. I have never needed it but there are a few friends that are glad I have it along. Car kits go for about $20 at the local discount stores.

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post #8 of 12 Old Apr 4th, 2008, 12:58 pm Thread Starter
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Re: Quick question about tire pressure

Joe you gave me the answer I was looking for, I didnt ride in this morning because I hadnt heard an answer I decided not risk it. When I get home Il take the bike to the gas station and fill it up.

I also am going to look into an air compressor, Il get a lot of use with my cars as well. In my older age, Ive become quite a bit more anal about maintenance. I supposed I finally figured out the old saying "an ounce of prevention is worth a pound of cure"

Thanks again for the info

Tom
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post #9 of 12 Old Apr 4th, 2008, 1:49 pm
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Re: Quick question about tire pressure

If you are considering mounting one permanently on your bike like many other owners,there are 2 on e-bay now. Search for thomas 215 This is the one that several members have used. Can be mounted under trunk where you have removed the charcoal canister.

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post #10 of 12 Old Apr 7th, 2008, 7:00 am Thread Starter
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Re: Quick question about tire pressure

BTW what's the recommended tire pressure on Metzlers? I cant seem to find it on the side of the tire. Also what happens if you over inflate? This tire stuff is all so new to me, I never paid any attention before, I guess ignorance was bliss

Tom
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post #11 of 12 Old Apr 7th, 2008, 7:33 am
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Re: Quick question about tire pressure

48 psi is the consensus on Metzler tire pressure. Keep it up or they start to howl. 42 psi in the front.

dan
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post #12 of 12 Old Apr 7th, 2008, 8:26 am
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Re: Quick question about tire pressure

If you want a decent compressor for home use, Go to costco. They have one for 68 bucks. Its not a small unit. Its got a tank and fairly decent pump on it. The little pumps like the thompson will not last long pumping up car tires. They are just for on the road top off's of your bike.

Brian Ley
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