jcannon

Inner wear looks strange to me - is this normal tire wear with 2 track days 8 sessions

dsteding

Yes. Tires look good, you are seeing rubber picked up from the track.

jcannon

^^^^ not talking abt melted tires. Zoom in on inner tire and see lines and separation .

dsteding

Are you getting some tire rubbing on the fender liner?

jcannon

nope

Larry Cable

that does NOT look "normal" to me...

ParadiseGT3

This inner shoulder wear pattern happens with a certain type of abrasive track surface, in my experience. Homestead Miami for me, with a handful of lower speed 2nd gear corners.

Abrasive/gritty surface is creating longitudinal "slicing" on the inner shoulder under load.

Could be something else, but if you're running on a coarse track surface with low speed exits, bet that's it.

dojo

Not normal but variables here are driving style, alignment and warm up cool / down cycle. lastly and most important is the track surface itself, if there are low speed corners and exits with rough pavement then that can certainly lead to it.

jcannon

take tire to shop for inspection or keep driving ? I assume this is how tires are made, no?

Larry Cable

I'd say that unless you can see any of the underlying tire construction you are "good to go" (for a while) but I would expect that they will cycle out for track purposes in the not to distant future so you will to closely
monitor the tires particularly the inner shoulder...

I might also consider having an alignment - or drive tracks with smoother surface and faster corners!

ParadiseGT3

Not really how they are made, this is irregular wear. Shop or dealer will probably just tell you to replace.

Can't tell for sure, but some of that scoring looks pretty deep. One groove in particular. If so, those tread blocks are now functionally compromised, subject to more flex, friction, and heat buildup than usual. Slicing is likely to turn to tearing and chunking if you keep doing what you were doing.

If that read isn't right, the cuts aren't very deep, maybe you'll wear through with some street miles but I wouldn't plan on more track time with them.

Larry Cable

Mussl Kar

I would track them some more and keep an eye on them. But that should be normal to keep an eye on your tires. If you drive on a track your tires are a "consumable" just like fuel, oil, brake pads, under ware, code brown stuff.

Thrownaway

All tires or just that one?

Christian Plyler

My big question would be how deep are the splits. Are they only a millimeter deep? Or are they propagating all the way down through the tread blocks? If they're shallow, I would keep using them, re-inspecting after every session to assess whether it's something that's rapidly getting worse or not.