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Originally Posted by dparm
Update: the dealer's Corvette tech who has done all the work on my car looked at the tires and said the wear looks appropriate/consistent with track usage. He seemed okay with the 8 hour lifespan given the car's performance potential and weight/size. He's a pretty no-BS guy so I don't think he was saying that just to avoid doing more work or whatever. He didn't have any specific comments on the flaking/peeling.
I drove 10 minutes to Fall-Line for a second opinion. Although they were busy fixing actual race cars, some eyebrows were raised as soon as I started mentioning the GM "competitive driving" alignment spec, especially with regards to toe. I think I'm going to have them replace the two front tires and realign it to something they feel is appropriate. They won't have the tool to adjust caster but I'm not that worried since it's still basically within spec and doesn't hugely contribute to tire wear (though it can slightly impact camber).
If this doesn't work, it might just be time to bite the bullet and get HREs or Forgelines. The popular setup is 18x11 front and 18x12.5 rears, with Rival S tires in 315/30R18 + 335/30R18. Hoosiers are also available in this size.
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Can you get your street tires shaved before running them on track? I'm wondering if you got some tread squirm that overheated the blocks and tore them early on and they finally let go. Wild ass guess but I've torn chunks from full tread depth RA-1s before (PIR banking did them in I think).
Happy to hear about your personal best! Well done.
