treadwear still keeps me in FSP.
it has been awhile since you've read up on the rulebook. there are more allowances for SP now, and tighter tolerances for stock classes (upsizing and treadwear) . what keeps them legit is the "rain grooves" and treadwear .
when i last wore these tires on the mirage, it was legal back then too. the rules can be unbelievably stretched for cars with 2 or 3 different STOCK tire sizes........
it has been awhile since you've read up on the rulebook. there are more allowances for SP now, and tighter tolerances for stock classes (upsizing and treadwear) . what keeps them legit is the "rain grooves" and treadwear .
when i last wore these tires on the mirage, it was legal back then too. the rules can be unbelievably stretched for cars with 2 or 3 different STOCK tire sizes........
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