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Tire Trouble

Old 07-15-16, 09:13 AM
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Tire Trouble

The tread on my front tire seems to be peeling off from the casing. It's coming off in little chunks, a little at a time. It is not separating on the edges, it is from the center of the tread, from the surface you ride on when going in a straight line.


Ever seen or heard of this before? To me, this seems like a manufacturing defect.


The tread has so little wear you can still see the full tread pattern (everywhere, except where the tread has chipped off ).

Last edited by Bad Lag; 07-15-16 at 09:16 AM.
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Old 07-15-16, 09:43 AM
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Not on a new tire, but I have had the tread separate from the casing in an unusual way:



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Old 07-15-16, 09:53 AM
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UV, heat, and age will degrade a tire, whether being used or not.
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Old 07-15-16, 12:16 PM
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I will try to take and post some photos. It looks substantially different than the photos, above.
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Old 07-15-16, 08:42 PM
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Originally Posted by oddjob2 View Post
UV, heat, and age will degrade a tire, whether being used or not.


Yes, but this is different. Different, as in, never seen anything like this before,... ever.
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Old 07-16-16, 10:47 AM
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This photo shows the worst of the damage. Most of the tread is not this bad. The rear tire is completely unaffected.


<zooming in on the image helps a lot>

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Old 07-16-16, 11:04 AM
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It's hard to tell from the pictures but the sidewalls look dried out. How old is the tire?
If it's as old as the sidewalls look, it's just too old.
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Old 07-16-16, 12:49 PM
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I had a tire do that recently. Bummed because the tire was part of a pair and seemed to have plenty of lfe left, till then. An older Continental that was on the rear.
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Old 07-16-16, 12:58 PM
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The tread looks that way for the same reason that the sideways look rotted, whatever that is.

Last edited by Trakhak; 07-16-16 at 01:08 PM.
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Old 07-16-16, 01:01 PM
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That tire looks age rotted. BIG TIME.
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Old 07-16-16, 01:04 PM
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Originally Posted by busdriver1959 View Post
It's hard to tell from the pictures but the sidewalls look dried out. How old is the tire?
If it's as old as the sidewalls look, it's just too old.


For sure, the tire is less than five years old (~4).


The sidewalls are darkened but are not as dark as they appear in the photo (not even close, really). Conversely, the tread is a dark black, not the charcoal grey they appear.


It is poor lighting and crappy photography. I posted it to show the nature of the defects.
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Old 07-16-16, 01:06 PM
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Originally Posted by Last ride 76 View Post
I had a tire do that recently. Bummed because the tire was part of a pair and seemed to have plenty of lfe left, till then. An older Continental that was on the rear.


Exactly, the rear tire is the same age (<5 years old) and is perfectly fine.
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Old 07-16-16, 01:09 PM
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Originally Posted by Trakhak View Post
Are you joking? If that happened when the tire was new, 20+ years ago, it would qualify as a manufacturing defect. As it is, think of it as a benign hint that you're taking your life in your hands in trusting tubulars as old as that one.

Further hint: the thread that was used to sew up the tire is just as old as the rest of the tire. Ever had a tubular blow off the rim after the thread gave way? I have. It wasn't pretty.




LOL! I'm not joking.


The tire may look to be 20 but is < 5 years old. The contrast in appearance with the matching rear tire and the act I've never personally seen this defect on any tire before lead to my asking if it was a manufacturing defect.


P.S. - It is a clincher tire, not a tubular. It is a Challenge "Criterium" clincher. <edited to correct the tire model.>

Last edited by Bad Lag; 07-17-16 at 04:34 PM.
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Old 07-16-16, 01:10 PM
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Originally Posted by SquidPuppet View Post
That tire looks age rotted. BIG TIME.


It certainly appears that way in the photo. See posts above about color rendition.


So, to name it, the tread appears to have become embrittled (hardened, cross-linked). This means it lacks flexibility. As a result, it has delaminated and fractured from the tread. Additional riding caused the loose rubber to crumble.


The question is,... why? Why this tire only? Why only in a few spots on the tire? Is the chemical composition of the rubber defective?

Last edited by Bad Lag; 07-16-16 at 01:15 PM.
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Old 07-16-16, 01:25 PM
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Originally Posted by Bad Lag View Post
It certainly appears that way in the photo. See posts above about color rendition.


So, to name it, the tread appears to have become embrittled (hardened, cross-linked). This means it lacks flexibility. As a result, it has delaminated and fractured from the tread. Additional riding caused the loose rubber to crumble.


The question is,... why? Why this tire only? Why only in a few spots on the tire? Is the chemical composition of the rubber defective?
I have no answers. But it looks like it was kept in a hot attic since 1960.
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Old 07-16-16, 01:38 PM
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Lol

Last edited by Bad Lag; 07-16-16 at 08:10 PM.
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Old 07-16-16, 08:11 PM
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So, it's "toast". Should I just replace it and move on, or should I pursue a remedy from the maker?
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Old 07-16-16, 08:23 PM
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5 year old tire and you want to complain/persue a remedy from the maker?
Save yourself some real issues and BUY new tires!
Rubber does deteriorate after time and exposure . . . without using it.
My tires never get to be 5 years old . . . we WEAR 'em out!
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Old 07-16-16, 08:27 PM
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You got 5 years out of the tire. Not sure the manufacturer is going to do much?
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Old 07-16-16, 08:58 PM
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UV light can both have similar effects to this. Do you store the bike in a place that gets direct sunlight?
Ozone will also degrade rubber. Do you store it next to something that has a large electric motor? How about a copy machine, laser printer or air purifier?
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Old 07-17-16, 07:55 AM
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Originally Posted by Bad Lag View Post
The tire may look to be 20 but is < 5 years old. The contrast in appearance with the matching rear tire and the act I've never personally seen this defect on any tire before lead to my asking if it was a manufacturing defect.
I have some 25+ YO tires that look like that, but < 5 is remarkable. They certainly need to go in the bin.

You need to move to a location with less atmospheric ozone.
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Old 07-17-16, 09:27 AM
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Originally Posted by Moe Zhoost View Post
I have some 25+ YO tires that look like that, but < 5 is remarkable. They certainly need to go in the bin.

You need to move to a location with less atmospheric ozone.




Thank you, I was hoping someone would agree it was unusual given the 5 year age. Whew! At least it isn't just me thinking it was weird.


Another weird thing. They were fine for all the time I was in Los Angeles - galactic center of high atmospheric ozone levels. It only occurred after leaving there for a place with fresh air and no smog at all. In LA, the bike was stored in a garage. Here, it lives with me indoors in my apartment (even better).


Does this make sense? Rubber was embrittled by ozone while in LA but glass-smooth roads there allowed tires to survive. Rough roads here cracked and separated tread from casing.


The thought of a remedy from the maker derives from the tire's high cost; the nature of the failure (tread separation); the low miles at failure; the unusual nature of the failure (I've never seen this before).


I have a replacement. I think I'll just mount the new tire and go for a ride. How does that sound?
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Old 07-17-16, 02:55 PM
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Find a new tires, store it in an environment where the humidity and temperature fluctuate wildly, where there is a high oxygen content, where ozone from electric motors is prevalent. Expose it to the sun as often as possible. Check in on it 20 years later. Pump it up to the max. Cover your ears first.
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Old 07-17-16, 04:40 PM
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Originally Posted by jimmuller View Post
Find a new tires, store it in an environment where the humidity and temperature fluctuate wildly, where there is a high oxygen content, where ozone from electric motors is prevalent. Expose it to the sun as often as possible. Check in on it 20 years later. Pump it up to the max. Cover your ears first.




LOL


But, but, but, .... this tire did not see that environment. Quite the contrary, it was babied in storage. The only sun it saw was while being ridden. Temperature range while not being ridden was very, very moderate (40 to 90F, max). Humidity was always moderate (it never rains in California).




I pulled the replacement tire out of its packaging and am preparing to install it. <-- ear plugs are in.

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Old 07-17-16, 07:06 PM
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What I noticed when installing the new front tire is the pressure range is 100 psi to 145 psi. As a heavy guy, I should be running the top end of that range, however, I've been running in the 90-100 psi range - too low.


Underinflation = classic cause of tread separation. ???
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