Depression on tire sidewalls

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Jul 22, 2007 | 11:01 PM

jkdank

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From: deerfield

Depression on tire sidewalls

I just bought cooper discovers AT in 35's and after mounting them, all of them have a few slight depressions(not perfectly smooth as run finger over) and 2 of them have 1 depression that is visible from a distance. Not a bulge but a significant indentation on the sidewalls. Is this the mold from the factory or are they messed up. (the bands are on top correct?) Not a huge concern but just looking for an opinion

THanks guys

Jul 22, 2007 | 11:05 PM

bigjake0524

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From: Oregon

Some tires have slight depressions on the sidewalls. I had a set of 315/75/16's that were a les schwab tire and they had a few slight depressions and they were ok put about 40,000 miles on them...

Jul 22, 2007 | 11:12 PM

Badluck

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From: The Dalles Oregon

yea alot of tires get those

Jul 23, 2007 | 12:30 AM

fixnair

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From: Sapulpa OK

I was told years ago that these irregularities were where the plys, the fabric inside the rubber carcas, overlap and are not harmful in any way.

Jul 24, 2007 | 10:32 AM

pullinair

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From: Mountaintop, PA

I have coopers also and was wandering the same thing as you. I guess its normal. I have about two on each tire. Mine are brand new too and I can only notice it if the light hits the tire at a certain angle.

Jul 24, 2007 | 11:21 AM

dc2842002

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From: York, SC

The depressions you see in the sidewall are ply splices. when the ply is applied as the tire is built there has to be a splice. This splice is thicker and therefore will not stretch as much when the tire is pushed against the mold (therefore you get a low spot)

Jul 24, 2007 | 02:01 PM

7.3L DID TD

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From: Cincinnati, Ohio

Quote:

Originally Posted by dc2842002

I was told a very similar thing and I'm running Michelin LTX M/S LT265/75R16 or maybe LT265/80R16's 10PLY's and this from Michelin. Who also told me indents are fine bulges are not.

Last edited by 7.3L DID TD; Jul 24, 2007 at 02:03 PM.