Here is what my Yokohama AVS100 looked like after a four sesion track day at NHIS. Just the rears looked like this.

 

Your Yokohama AVS ES100s look much better than mine did after running them on the track. I have a tight left hand turn bias 0.8 mile track with four left turns and one right turn. I chew up the outer edges of the right front tires and spare the rears. I've had chunking of the tread in my ES100s from overheating the tread (with too much tread depth).

Your tires look like they were worn a bit before tracking or were they new?
New tires may not do as well if overheated on the track.

Are you running stock alignment settings or do you have more negative camber in the front or rears? Any suspension upgrades?

How did you like the ES100s? Mine were OK and did perform better than the stock 17" runflats. I sometimes run Bridgestone Potenza S-03s on the track and they do a little better/ wear a little better.

 

Actually the tires perform great. Very fast track tire for a street tire I would say.

They had about 8000 miles on them including a slower track day at Lime Rock before this. Rear camber is about -1.85, 0 toe, which certainly helped with the wear.

I do like the tire. I'm looking for someone in my area that can shave them a bit to get the 'blocking' out. I will now be running designated track tires from this point on.

Anyone know who can shave tires in the northeast?

 

Looks like you had plenty of fun.

Your tires actually look pretty good. Ive seen some that look like
it melted.

 

Those don't look too bad at all. What are you going to run as "designated track tires" from here on out?

Here are my Kumho's after 4 sessions at VIR:

 

205/40/17 Toyo RA1, shaved to 4/32.

 

Nice. There was a race prepped MINI running those and the racer seemed to like them a lot along with the Avon Tech Rs (225/45/17).



Any more track days for me and I'll have to get a spare wheel/tire set too. I don't think the Kumhos will last very long with more events.

 

You guys realize that's just loose rubber picked up from the track right?

You're mainly seeing it on the rears because the fronts are scrubbing it off.

 

Wow, not bad. I have the same tires and was wondering how they would hold up at the track. I now have an answer.

 

No, it's not from the road necessarily. The rubber on my tires are from my tires for the most part. You can see when you study the tire that the rubber you see has been scrubbed from the tire itself. The outside edge of each tread block has been worn down. That rubber has been scrubbed to the ends of each tread block.

 

Here's a goodyear tire that has seen worse. This is not rubber from the road I can assure you

 

Those don't look too good. They definitely overheated. I wonder what the stock tread depth is on that tire.

 

Regardless of most any brand tire, if it is fairly new with good depth of tread, on a track it is going to tear or chunk the tread. The only way to avoid this is to have the tread shaved to about 3/32 to 4/32 or buy a tire that is designed for autox or track use.
Playing with camber and pressures can help but, if your at full depth of tread, their going to chunk.