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rear tire wears exceptionally fast...why?

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rear tire wears exceptionally fast...why?

Old 03-23-11, 07:28 PM
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nexusonemeover
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rear tire wears exceptionally fast...why?

I've been biking since 2007. I have a Trek Madone 5.1 with Ksyrium Equipe wheels wrapped in Michelin Krylion 700x23c. I weight about 190 lbs and ride rolling hills in northeast Ohio. No severe climbing, no racing, just very animated leisure riding (maybe up to 40 miles a ride). I keep the tires inflated to maximum sidewall pressure and ride concrete or asphalt on dry days (I try to avoid rain rides).

I seem to go through about 3 times as many tires for the rear wheel as the front. I'd say I'm replacing rear tire about every 1000 miles.

I was at my local bike shop a few weeks ago and they indicated it was time to change tires again. I opted for a tire they advertised as having better mileage than the Krylion and went with Conti Grand Prix 24mm.

Anyone have feedback on what could be happening? Is this normal or am I completely out of the loop?

The guys at the bike shop indicated that I should be getting more than 1000 miles and the wear pattern should be more even between the front and rear.
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Old 03-23-11, 07:32 PM
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Rear tires wear out about twice as quick as the front.
1000 miles seems to early.

How do you determine that it is worn out?
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Old 03-23-11, 07:33 PM
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You'll square off your rear tire WAY before the front, but you should get more than 1000 miles. Try another tire?
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Old 03-23-11, 07:34 PM
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bike store employee says so... for a tire without wear indicators, how can i tell for sure?
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Old 03-23-11, 07:36 PM
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If it holds air in the tube and you are not having flats, it is still good.
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Old 03-23-11, 07:41 PM
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how much tire performance is lost due to the shape changing with wear of the tire?
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Old 03-23-11, 07:41 PM
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This is the only tire I have worn out. Most get cuts and have flats.
6,000 miles on this rear tire with 7 flats before the threads came through.
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Old 03-23-11, 07:42 PM
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Does anybody ever rotate their tires?
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Old 03-23-11, 07:42 PM
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For what it's worth, I weigh 225, and currently have a krylon rear with over 3000 miles and that is pretty normal for me. I average between 6 and 7000 miles a year and that usually equals 2 rears.
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Old 03-23-11, 07:44 PM
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A tire is not worn out until you can see the cords.
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Old 03-23-11, 07:46 PM
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lovely... so the dudes at my bike shop are just trying to stymie my nest egg... awesome. (note the sarcasm)
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Old 03-23-11, 07:47 PM
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Originally Posted by nexusonemeover View Post
lovely... so the dudes at my bike shop are just trying to stymie my nest egg... awesome. (note the sarcasm)
My buddy got 15,000 miles out of this one.
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Old 03-23-11, 07:51 PM
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Originally Posted by Silvercivic27 View Post
Does anybody ever rotate their tires?
I rotate mine every 2 weeks, fairly even wear. I'm not sure if people advise against this or not, it seems like a good idea to me. If only my car's tires could be rotated that way
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Old 03-23-11, 07:51 PM
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I have 5,000 miles right now on my rear wheel right now, on these.

https://www.jensonusa.com/store/produ...Road+Tire.aspx
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Old 03-23-11, 07:58 PM
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ok folks. looks like ill be spinning on this new set for quite a while. i have quite a collection of old tires now... but i guess i can use em for a great while longer.

thanks for the input.
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Old 03-23-11, 08:00 PM
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Keep your best ones on the front wheel.
Take off the new rear tire and use your old ones.
That is what I am doing.
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Old 03-23-11, 08:29 PM
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Before you go away doubting your LBS, here's another opinion. Don't compare your milage with others. Some tires have softer compounds that makes them handle/much more sticky but they wear much faster. Tire waer alos is dependent on rider weight and style of riding - sprints, quick acceleration, fast stops, etc. also make for faster wear.

When tires wear, you get flats easier. So what looks like good tread remaining may mean they cut to the tubes easier.

I personally buy tires at approximately 50% off from places like pbk and change them before I get lots of flats.
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Old 03-23-11, 09:21 PM
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I always put the fresh tires for the front wheel, which is the wheel you absolutely don't want to have a blow out on while you riding.

Staggered wheels with asymmetric and unidirectional tires here as well(car).
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Old 03-23-11, 10:01 PM
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I get 4-5000 miles out of my rears.. I rotate the front to the back after replacing two rears.

I run race tires (GP4000S) but I'm pretty light (130 lbs...)
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Old 03-23-11, 10:12 PM
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Originally Posted by Silvercivic27 View Post
Does anybody ever rotate their tires?
Originally Posted by danvuquoc View Post
I rotate mine every 2 weeks, fairly even wear. I'm not sure if people advise against this or not, it seems like a good idea to me. If only my car's tires could be rotated that way
Freshest tire should always be up front. Two reasons: 1) Your bike handles/turns best when the tire doing the steering is in tip-top condition; 2) Worn out tires, even evenly worn out tires, have a greater chance of flatting or blowing out.... if that happens on the rear, not much happens other than you slow down and stop.... if it happens in the front, in can be disaster for the bike and your body.
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Old 03-24-11, 05:40 AM
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I just broke through the 200 lb. barrier (now 195) and the least I've gotten from a rear tire was 1100 miles, from a Michelin Lithion. The wear indicator was the cords starting to show through.

The max pressure indicated on the sidewall isn't a recommended pressure, just the max pressure the manufacturer feels it'll take according to the manufacturer's standards. A couple of things you might want to explore are reducing the tire pressure, and going to 700x25s. I'm currently running 700x25 Gatorskins at 90 psi front, psi 100 rear; I just reduced the tire pressure from 100 psi front/110 psi rear, no problems (including pinch flats) yet. I expect to get ~3,000 miles from the rear.
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Old 03-24-11, 06:12 AM
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on super supple racy tires like vittoria open corsas, ultremo r1s and michelin PR3's i'll get just under 2k out of the rear and much more out of a front. i ride several bikes and several wheelsets so its not an exact science, but trashing krylions after 1000 miles is most likely premature.
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Old 03-24-11, 06:16 AM
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Stop locking up your rear brake so much?
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Old 03-24-11, 06:17 AM
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Some reasons for fast rear tire wear:
Improper tire pressure
Rear wheel skidding
Overuse of rear brakes
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Old 03-24-11, 06:38 AM
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Lol, 1k miles is way too early for a tire to wear out unless you are skidding all of the time. I guess it depends on how new you like your tires. I have multiple sets of wheels with multiple sets of tires for each, so I guess I just don't wear down as much. That being sad, I have toured into the 2k mile range and my tires were not even close to needing replacement. (Those were fairly inexpensive Kenda tires) I usually carry about 40-60lbs worth of stuff while touring of that caliber and there is a LOT of downhill braking, uphill heavy climbs, and a transfer between towpath and road.

As mentioned above. 1000 miles seems a little quick, however, your riding style, the road terrains, the temperature and humidity changes are HUGE factors in these things. Why not just switch your front and rear tire every 500 miles if it is that big of a concern. You should at least be able to squeeze more mileage in between purchases. Though you will have to buy twice as many tires.
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