They would easily do 14 cycles across 6 tires. I find that they take an extra lap to come up to speed but are 100% consistant froa race up here in the Northeast. They are also less prone to flat spotting if you make a mistake. I have never gone faster with Hoosiers than with Goodyears. They are only available in 205/50 and 225/45 15's IIRC.
I have run them for 3 years now.
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