on the third set of tires for my 'vette I changed from the goodyear GSC's to Firestone Firehawk sz50's and the sz50's were
TWICE the tire that the GSC's were.
better traction.
better wear.
shed water like nobodys business.
and on top of that ...better price!
now obviously they had some problems with a couple of batches of their truck tires but I have not had any of them. All I can say is that the couple of sets of performance tires that I have had were excellent tires.
I would like to think that all of those INDY guys are not stupid
have a good one,
Dan