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Old 06-25-2013, 11:11 AM   #1
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Rear tire wear and tear

Hey guys,

I found my rear tire in this condition one morning last week, and was wondering if there were any opinions out there as to the cause or culprit. The ring is straight down the middle, and goes about 1/2way around the tire. I had just come back from a 4-day trip to Austin, during which I looked the tire over inch-by-inch and checked the air pressure several times, and it looked perfect. Wasn't riding all that great, but I put that down to all the gear I had on the back. I check the air fairly often, and have only had to put air in it once in the 5 months I've owned it. Anyways, one morning the next week I rode from home to class, about a 15min ride, and found the rear tire in this condition when I parked it. Any ideas out there as to the cause? Is this just what a normal, worn-out rear looks like?
The tire is a Michelin Gold something or other, 150/70-14, came with the bike. I bought it used 5 months ago, had 750 miles on it, and since then I've put on about 6000 more, mostly in town (Galveston) or on the interstate. To be fair, the guy I bought the bike from said it had been a part of some "scooter rental" company in Louisiana, so I have no idea what kind of riding it was put through in those first 750 miles. If you look at the tread on the sides, you can see it's got plenty of depth left, and is perfectly symmetrical, and the front tire's fine. This doesn't seem, to me, like something I should just "wake up and notice" Seems like if it was gonna get to this point, it would be something gradual, over days, weeks, or even months. What do you guys think?
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Old 06-25-2013, 11:13 AM   #2
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Also, as an aside, I parked the bike that day, ordered a new tire, and haven't ridden it since. That wear pattern was just plain scary looking.
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Old 06-25-2013, 11:18 AM   #3
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To much throttle on take off. Must have some serious hp on that bad boy
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Old 06-25-2013, 11:21 AM   #4
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you do indeed need a new tire, but that does not look like wear to me, it looks like tire failure. It only goes half way around so how did only half the tire get wear?
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Old 06-25-2013, 11:24 AM   #5
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massive locking up of the tire with brakes lol
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Old 06-25-2013, 11:24 AM   #6
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Out of balance, poor manufacturing quality control, etc.
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Old 06-25-2013, 11:26 AM   #7
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Brand? Miles on it? Age?
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Old 06-25-2013, 11:31 AM   #8
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1. Sure your tire gauge is good? Adding air only once in 5 months doesn't seem right.
2. What's your cold tire pressure?
3. You just wore the center out. That's common in Houston.
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Old 06-25-2013, 11:37 AM   #9
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It committed suicide due to being on a scooter....
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Old 06-25-2013, 11:47 AM   #10
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what pressure have you been running at?

If you didn't check it for 6 months and found it at 10 psi it was due to under inflation
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Old 06-25-2013, 12:01 PM   #11
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6000+ miles?? I'll trade ya.. I get around 1800 out of my rear..
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Old 06-25-2013, 12:07 PM   #12
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What kind of load is a scooter tire rated for? How much did you have on it for that road trip to Austin?

That could have easily worn the tire significantly... then once it's to the cords, not much holding it together.

And yeah, maybe previous owners liked locking the rear tire.
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Old 06-25-2013, 01:28 PM   #13
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typical Texas Tire Syndrome


middle goes out 30 x faster than the sides.

You should make friends with someone in Tennessee, they wear the sides out first,
Tire exchange program?
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Old 06-25-2013, 03:07 PM   #14
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Normal wear.
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Old 06-25-2013, 04:56 PM   #15
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yeah 6,000 is about "low-normal" for tire change on street/commuter duty bikes. mine typically get 8-9k and i have "touring" cycle tires, which may or may not be of diff compound than scooter tires.

the middle wears out faster than the sides on street duty tires.
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Old 06-25-2013, 10:43 PM   #16
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Problem solved....sort of

Thanks guys. I got the new tire in today, a Pirelli, and got it mounted. One problem, though, and that's that I didn't get it balanced. Bear with me, this was my first time mounting a new tire on a bike, the only other time I took one off was to fix a flat, so I'm still learning. Is this something I should always do when mounting a new tire? I had some guys at a tire shop down the street mount it to the rim, but didn't ask them to balance it, mainly because I thought it would be unnecessary, and because I didn't know if they could do it. So I put the wheel and tire back on, ran it on the stand a while, drove it a few blocks, and well.....it needs balancing. Idling around the parking lot feels like navigating a construction site; it's just not right. If I take the thing back off, is this something a normal (car) tire place could do? Or does it take special equipment for MC tires?

And if so, could anybody recommend someone sort of on my side of town (southeast side, the closer to Galveston the getter) that would do a good job?
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Old 06-26-2013, 12:39 AM   #17
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You have something else off.. you won't feel a balance problem idling around the parking lot.
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Old 06-26-2013, 01:20 AM   #18
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Quote:
Originally Posted by D-Man View Post
Thanks guys. I got the new tire in today, a Pirelli, and got it mounted. One problem, though, and that's that I didn't get it balanced. Bear with me, this was my first time mounting a new tire on a bike, the only other time I took one off was to fix a flat, so I'm still learning. Is this something I should always do when mounting a new tire? I had some guys at a tire shop down the street mount it to the rim, but didn't ask them to balance it, mainly because I thought it would be unnecessary, and because I didn't know if they could do it. So I put the wheel and tire back on, ran it on the stand a while, drove it a few blocks, and well.....it needs balancing. Idling around the parking lot feels like navigating a construction site; it's just not right. If I take the thing back off, is this something a normal (car) tire place could do? Or does it take special equipment for MC tires?

And if so, could anybody recommend someone sort of on my side of town (southeast side, the closer to Galveston the getter) that would do a good job?
Sounds like they didn't set the beads correctly if it is that badly unbalanced. Take it to a MC shop unless you don't mind dying down the road. Get 1 oz of dynabeads and you'll be good.
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Old 06-26-2013, 09:42 AM   #19
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is your rim bent?
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Old 06-26-2013, 12:14 PM   #20
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Quote:
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is your rim bent?

What he said.
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