Originally Posted by GrantG

I'd be surprised if you used more than 5-10%. You can measure tread depths, but be aware that without a track alignment, you probably wore the outside shoulders most. Also with track use, it's possible to wear out tires before the tread is gone (from too many heat cycles), but this is highly unusual for the stock tires which usually get corded before that...

Originally Posted by brownan

They're probably fine unless you ran too much or too little pressure. They should be good for a pile of heat cycles (30+). They're just less pretty now.

Originally Posted by SmokinGTS

I personally have never corded a set of Cup 2 tires as they loose grip long before the tread is gone. If you can tolerate the lack of grip run them to the cord. Your tires will not wear evenly no matter what your camber is set to. Each track has its own way of wearing tires out and usually depends on rotation. My advise is to rotate your tires often to even out the wear. Now pray for RE 71R's in 305's...

Originally Posted by tonymission

Sgroer runs bald tires at the track and he's faster than just about everyone so I wouldn't worry too much about it !! :P I believe tread really only comes into play when it's wet on the road, but someone will correct me if I'm wrong.

I think most track guys will see their tires heat cycle out before the tread is gone... I'm still running my stock wheels and original tires at the track and they grab as good as day one. That's three full track days (30-50 laps each day) and a lot of mountain driving. They don't look very good, that's for sure.

FWIW -- I am running a track alignment from Goldcrest Motorsports who seem to know what they're doing.

Originally Posted by CSLSuperfan

Rob


Many thanks for posting a thread that's not about the Gen2!! Your tyres are very healthy with oodles of life left. Been a life long fan of Cup 1's and they historically have an unbelievably high tolerance to abuse.

Camber and tyre temp coupled with gradually warming rubber on out laps are all key to longevity.

After a couple of days your tyres will clean up and look a lot less angry.

Originally Posted by tasman

those tires are sign of a happily exercised car.

Originally Posted by tonymission

Sgroer runs bald tires at the track and he's faster than just about everyone so I wouldn't worry too much about it !! :P I believe tread really only comes into play when it's wet on the road, but someone will correct me if I'm wrong.

I think most track guys will see their tires heat cycle out before the tread is gone... I'm still running my stock wheels and original tires at the track and they grab as good as day one. That's three full track days (30-50 laps each day) and a lot of mountain driving. They don't look very good, that's for sure.

FWIW -- I am running a track alignment from Goldcrest Motorsports who seem to know what they're doing.

Originally Posted by sgroer

Me and my bald tires are going to be back at it again on Friday!

ROb, your tires are in great shape. 12 laps will do almost no damage to them, especially in cool weather like you drove in.

There's not a ton of science to this... if the car's grip still makes you happy and the tires aren't obviously at the point of failure (ie - corded) , then roll with 'em!

Originally Posted by k997

Can someone please explain what a heat cycle is with respect to the tires and what "heat cycling out" means? Also, how do you see it? Thanks.

Originally Posted by ExMB

Heat cycle is just what it sounds like. You increase the temperature and then cool it back off. That changes how the rubber behaves. You don't see it, you feel it. You will notice less grip because the compound hardened and no longer sticks as well as previous.

Heat cycle

Originally Posted by SmokinGTS

I personally have never corded a set of Cup 2 tires as they loose grip long before the tread is gone. If you can tolerate the lack of grip run them to the cord. Your tires will not wear evenly no matter what your camber is set to. Each track has its own way of wearing tires out and usually depends on rotation. My advise is to rotate your tires often to even out the wear. Now pray for RE 71R's in 305's...

Originally Posted by ms550

5 Days Front left Lime Rock Park.

Originally Posted by robmypro

Okay good to know. Sometimes i tend to overthink this stuff!

Originally Posted by TRAKCAR

Rob, just keep en eye on the tires. They will start chunking on the outside edge after the start cording. Should be good till they start chunking. It looks like little pieces of the edge missing here and there, easy to spot.

Originally Posted by robmypro

I think you are right! I think i was scaring the crap out of this car with talk of keeping it forever, yet no tracking in 14,000 miles!