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Tire Deterioration

Old 07-01-22, 08:47 AM
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Miradaman
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Tire Deterioration

Ok, not the greatest photo but best I could do so bear with me. The tires on my road bike have developed a sort of separation along a seam near the rim. Look close and you can see how the screwdriver head is folding back an edge. Is this a sign they're giving up the ghost? Tread and everything else is still fine. They're Bontrager T2 tires, about 2.5 years old. Thanks!
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Old 07-01-22, 08:59 AM
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I've seen others with the same issue. It might cause you to have a failure sooner than not. But the others I've seen were much worse looking and they lasted their owners many rides.

I've wondered if it's caused by the rim cutting through the soft rubber sidewall covering when riding with too low a air pressure or riding on a flatted tire for a time or if it's just sometimes a tire shows up that wasn't the best built off the production line.

It'll probably last a lot longer than you think it will.
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Old 07-01-22, 09:01 AM
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Looks like the edge of the chafer strip to me. That's an extra layer of fabric bonded around the bead to protect it from abrasion. Totally normal for it to start to peel away at the edge after some use.
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Old 07-01-22, 09:02 AM
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Originally Posted by Iride01 View Post
I've wondered if it's caused by the rim cutting through the soft rubber sidewall covering when riding with too low a air pressure or riding on a flatted tire for a time
Never had that problem at 140 psi. Just sayin.'
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Old 07-01-22, 09:06 AM
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Originally Posted by Iride01 View Post
I've seen others with the same issue. It might cause you to have a failure sooner than not. But the others I've seen were much worse looking and they lasted their owners many rides.

I've wondered if it's caused by the rim cutting through the soft rubber sidewall covering when riding with too low a air pressure or riding on a flatted tire for a time or if it's just sometimes a tire shows up that wasn't the best built off the production line.

It'll probably last a lot longer than you think it will.
I'm pretty good about keeping up the air pressure and have never ridden it on a flat. Tires seem solid otherwise so I think you might be right, I'll assume they've got a fair amount of life left. They've only got 1200 miles on them.
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Old 07-01-22, 09:08 AM
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Agree with the chaff strip often becoming separated just above the rim. This by itself hasn't been a problem for many before you, use to be real common with sew ups then when wired ons became so lightweight we began to see it with non race tires too.

Nice photo showing the question spot BTW.

smd4- Yea, usually its other issues at that high a tire pressure Andy
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Old 07-01-22, 09:20 AM
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Originally Posted by Andrew R Stewart View Post
smd4- Yea, usually its other issues at that high a tire pressure Andy
Still trying to figure out what they might be!
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Old 07-01-22, 02:22 PM
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Agree with the chaff strip thing in posts #3 & #6. Have had plenty of those and never an issue. I cut away the threads as they come loose to avoid triggering my loose thread OCD.
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