Tires defect?

Akura · 07-05-2017, 06:10 AM

Hello,

Yes, I know there´s a forum for tires but the General has more visits, so please until a mod moves the thread tell me what do you think about these tires

(Sorry, no idea about to embed the video).

It´s an EU Camaro V8 2017 with 10497 kms in the odo, 6300 miles aprox. No burnouts, no drifting...

Thank you.

nancygrl · 07-05-2017, 09:08 AM

I first thought of some junk you may have run over, but never seen anything like this where it's only the rear tires.

trboxman · 07-05-2017, 10:37 AM

Looks like you ran over debris in the road.

RenegadeXR · 07-05-2017, 01:35 PM

+1, you must have hit something on the road, and relative to your car, it was in a diagonal direction of travel. This would also explain why only the rear wheels are affected. Looks like something sliced across both maybe when changing lanes?

All you can do is file a road hazard claim on the tires if you have this. I can't see this being covered under warranty.

Rock-It Man · 07-05-2017, 02:59 PM

Interesting that it's both rear wheels. It looks like the wheels went over something sharp and spun. I don't think this would happen from just rolling over something.

The only time I've seen this was on my Z-24 front tire (front wheel drive) and it was caused by a throttle happy driver unloading my new car from the trailer and shredding the tire on a damaged ramp. In my case, it was only one wheel since there was no limited slip differential on that car.

Needless to say, the dealer had to replace the tire at his expense.

Is it possible that this damage went unnoticed for a long time?

Sboston4 · 07-05-2017, 08:47 PM

I sold tires for a couple of years while in college and can honestly say that I've never seen this before. One thing that I know is that if you complain enough about a "ride disturbance," tire manufacturers will discount you into a replacement. They don't mind selling more units at a discount if that's what it takes to get you to replace them sooner than they need to be. Discount tire has "traded in" tires for me before and discounted the replacements based on a proration. Good luck.

VelvetHammer · 07-05-2017, 09:46 PM

Been in the automotive business a long time, sat through many classes that delved into every aspect of tire construction and that looks like the diagonal seam where the outermost layer of rubber is overlapped and bonded. A tire starts out as a more or less flat cylinder built up in layers and put in a mold. Only when heat and pressure are applied to the mold does this cylinder of rubber, fabric and steel assume the shape of a tire, all of the overlapping seams are still there. The staggered fitment on the SS would help explain why only the rear tires are affected. I'm gonna say defect.

trboxman · 07-05-2017, 09:59 PM

You had me all the way to:

Quote:

The staggered fitment on the SS would help explain why only the rear tires are affected.

and then you completely lost me.

I agree that it does look like the bias cut on the carcass material and that's where I was till the 2nd tire showed the same line but only partially and then the aspect of likelihood comes into play...as in it's not likely he would have 2 tires with the same defect. Possible, but I don't think it's the first probability.

VelvetHammer · 07-05-2017, 10:14 PM

Quote:

Originally Posted by trboxman

You had me all the way to: and then you completely lost me.

I agree that it does look like the bias cut on the carcass material and that's where I was till the 2nd tire showed the same line but only partially and then the aspect of likelihood comes into play...as in it's not likely he would have 2 tires with the same defect. Possible, but I don't think it's the first probability.

Same size, same batch, same mold, same day. Fronts are different size, batch, mold. I still feel as if it were impact damage he would remember hitting it. It would have to be something pretty substantial to do that type of damage and there would almost certainly be evidence of impact on at least one of the front tires, if not on the car as well.

trboxman · 07-05-2017, 10:22 PM

Ah. Understood now. You may be right, it's an oddity either way.

TheReaper · 07-05-2017, 10:39 PM

That's damage, not the fault of the tire.

Gunkk · 07-05-2017, 11:19 PM

Well with a 10x loop you can probably examine the edges of the "cracks"/"seams" and see if they were molded that way (smooth) or cut (rough).

I'm with velvethammer... it's a defect.

Akura · 07-07-2017, 01:54 PM

Thank you all.

No impact or hit was done to the tires, never run over a road debris... that's why I am so concerned.

I sent the video to the dealer, waiting answer. Will update soon the thread.

Thank you again.

PinHead · 07-07-2017, 02:25 PM

Quote:

Originally Posted by Akura

Thank you all.

No impact or hit was done to the tires, never run over a road debris... that's why I am so concerned.

I sent the video to the dealer, waiting answer. Will update soon the thread.

Thank you again.

Have you sent the info & pics to the Tire Manufacture?

They'll need the DOT Codes on the sidewall.

07-05-2017, 09:08 AM	#2
nancygrl 雪の玉 Drives: '22 Z71 RST Silverado Join Date: Feb 2011 Location: South Posts: 3,415	I first thought of some junk you may have run over, but never seen anything like this where it's only the rear tires. Last edited by nancygrl; 07-05-2017 at 12:49 PM.

07-05-2017, 01:35 PM	#4
RenegadeXR Drives: 2011 Camaro SS Join Date: Apr 2013 Location: North Carolina Posts: 1,849	+1, you must have hit something on the road, and relative to your car, it was in a diagonal direction of travel. This would also explain why only the rear wheels are affected. Looks like something sliced across both maybe when changing lanes? All you can do is file a road hazard claim on the tires if you have this. I can't see this being covered under warranty. __________________ Disclaimer: Unless specific sources are cited, all of the above is my subjective opinion. No warranties, expressed or implied, are granted. This is a car forum, after all.

07-05-2017, 09:46 PM	#7
VelvetHammer Drives: 2016 Hyper Blue 2SS, A8, NPP Join Date: Nov 2016 Location: Groves, Texas Posts: 90	Been in the automotive business a long time, sat through many classes that delved into every aspect of tire construction and that looks like the diagonal seam where the outermost layer of rubber is overlapped and bonded. A tire starts out as a more or less flat cylinder built up in layers and put in a mold. Only when heat and pressure are applied to the mold does this cylinder of rubber, fabric and steel assume the shape of a tire, all of the overlapping seams are still there. The staggered fitment on the SS would help explain why only the rear tires are affected. I'm gonna say defect. __________________ Current stable: 2016 Hyper Blue 2SS 2001 Pewter Z28 Gone but not forgotten: 1978 Dark Blue-Green Z28 w/1970 LT1 power 1978 Bright Blue Z28 1976 Light Blue RS 1973 Green-Gold LT

07-05-2017, 10:39 PM	#11
TheReaper Drives: 2018 Mustang GT Join Date: Jul 2011 Location: Mobile Al Posts: 750	That's damage, not the fault of the tire. __________________ 2018 GT 10R80-355

07-07-2017, 01:54 PM	#13
Akura Drives: ´18 ZL1 A10 Red Hot 😍 Join Date: Jan 2016 Location: Madrid, SPAIN Posts: 347	Thank you all. No impact or hit was done to the tires, never run over a road debris... that's why I am so concerned. I sent the video to the dealer, waiting answer. Will update soon the thread. Thank you again. __________________ First ZL1 in Spain (Madrid)! Red Hot, A10, PDR, carbon fiber hood & grounds effects...

07-05-2017, 10:37 AM	#3
trboxman Drives: 2017 2SS, M6, HBM Join Date: May 2017 Location: Wa Posts: 108	Looks like you ran over debris in the road.

07-05-2017, 02:59 PM	#5
Rock-It Man 376 cubic inches of fun Drives: 2023 Camaro ZL1 A10 Join Date: Jul 2010 Location: MA Posts: 4,031 View My Garage	Interesting that it's both rear wheels. It looks like the wheels went over something sharp and spun. I don't think this would happen from just rolling over something. The only time I've seen this was on my Z-24 front tire (front wheel drive) and it was caused by a throttle happy driver unloading my new car from the trailer and shredding the tire on a damaged ramp. In my case, it was only one wheel since there was no limited slip differential on that car. Needless to say, the dealer had to replace the tire at his expense. Is it possible that this damage went unnoticed for a long time?

07-05-2017, 08:47 PM	#6
Sboston4 Drives: '17 LT Nightfall Grey Join Date: Jul 2017 Location: Dallas, TX Posts: 96 View My Garage	I sold tires for a couple of years while in college and can honestly say that I've never seen this before. One thing that I know is that if you complain enough about a "ride disturbance," tire manufacturers will discount you into a replacement. They don't mind selling more units at a discount if that's what it takes to get you to replace them sooner than they need to be. Discount tire has "traded in" tires for me before and discounted the replacements based on a proration. Good luck.

07-05-2017, 10:22 PM	#10
trboxman Drives: 2017 2SS, M6, HBM Join Date: May 2017 Location: Wa Posts: 108	Ah. Understood now. You may be right, it's an oddity either way.

07-05-2017, 11:19 PM	#12
Gunkk Thank you Al Oppenheiser! Drives: Red Hot A10 ZL1 Convertible Join Date: Jun 2017 Location: Sarasota, FL Posts: 4,975 View My Garage	Well with a 10x loop you can probably examine the edges of the "cracks"/"seams" and see if they were molded that way (smooth) or cut (rough). I'm with velvethammer... it's a defect.

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