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-   -   How tires got this way? (https://www.corvetteforum.com/forums/c7-general-discussion/4232944-how-tires-got-this-way.html)

Dewayne4608 01-17-2019 10:38 PM

How tires got this way?
 
Hey guys any idea why these tires look this way?

Is this from hard track riding. or driving these summer only tires in the cold?

Michelin Super Sport. These are the front tires..
https://cimg9.ibsrv.net/gimg/www.cor...763f9deb6c.jpg


Thanks for any input..

Marcho Polo 01-17-2019 10:58 PM

I would say track. Have you done an event recently?

XLR8TIN 01-17-2019 11:12 PM

Date codes?

Dewayne4608 01-17-2019 11:12 PM


Originally Posted by Marcho Polo (Post 1598707877)
I would say track. Have you done an event recently?

just bought car it was this way..

Dewayne4608 01-17-2019 11:13 PM


Originally Posted by xlr8tin (Post 1598707923)
date codes?

2815

The HACK 01-17-2019 11:26 PM

That’s not track damage. Track related wear shows up as discoloration (blue tinged) from heat generated, or clumpy look from the hot tread picking up existing clag and spent rubber on the track surface.

That look to me like sun damage, from being stored outside under the sun. Over time the rubber hardens and cracks from UV exposure.

This was on my new GS. Car was parked outside for nearly 2 years at the dealership:

https://cimg8.ibsrv.net/gimg/www.cor...e9ce0ef46.jpeg


The car car sat in the same spot for months and months (I know because I went by a few times to look and the car never moved), and this is the side where it faces the sun for an extended time (east) where by afternoon the car would be under shades. The tires on the opposite side has some cracking but not as bad.

When I bought the car I told them I wasn’t going to drive the car off the lot (for that matter, PAY for it) unless they put brand new tires on it.

Dewayne4608 01-17-2019 11:30 PM

Great point. your dead on right... thanks man......

The HACK 01-17-2019 11:44 PM

By the way, those tires are NOT safe to drive on.

Vetteman Jack 01-17-2019 11:51 PM

The HACK - good catch. :thumbs:

Marcho Polo 01-18-2019 08:33 AM


Originally Posted by The HACK (Post 1598707973)
That’s not track damage. Track related wear shows up as discoloration (blue tinged) from heat generated, or clumpy look from the hot tread picking up existing clag and spent rubber on the track surface.

That look to me like sun damage, from being stored outside under the sun. Over time the rubber hardens and cracks from UV exposure.

Just got home and looked at this on my laptop instead of my phone, and you are dead right.... I didn't catch the cracks down inside the tread.... initially when I saw it, it did remind me of my tires after a track event, but after getting home and looking at those pics, it's a lot different, the direction of the wear is not the same as what is in this pic. But yeah, those cracks down inside are from being old and in the sun.

here is my tire after a track day...

https://cimg4.ibsrv.net/gimg/www.cor...7567ac4e8d.jpg

completely different now that I am home to compare....

so like the Hack said, this is from age/sun, not driving in cold or track time.



Internets_Ninja 01-18-2019 09:20 AM

Likely old tires that have seen summer and winter temps outdoors a few times. I assume the car has low miles?

Dewayne4608 01-18-2019 09:29 AM

I knew you guys would know thanks all!!!!

JMII 01-18-2019 09:51 AM


Originally Posted by The HACK (Post 1598707973)
That’s not track damage. Track related wear shows up as discoloration (blue tinged) from heat generated, or clumpy look from the hot tread picking up existing clag and spent rubber on the track surface.

:iagree: clumpy is a good way to describe the pickup seen on tires after a track day.


Maxpowers 01-18-2019 12:23 PM

When we bought my wifes car the dealer replaced the P-zero's because they were cracking. The car sat on the lot over a very cold winter. The tires looked just like yours.

evoroadster 01-18-2019 12:51 PM


Originally Posted by JMII (Post 1598709442)
:iagree: clumpy is a good way to describe the pickup seen on tires after a track day.

Boogers.


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