Yeah I do. I have two old set of R888s and one old set of Sport Cups. The R888s are good when they are new and when they are almost completely gone. They lose a lot of grip in between. The Cups I just didn't like and they were so fucking expensive. The same setup process works for street tires. Just be careful when pulling out the pyrometer probe because they tend to break in street tires.
Weren't you supposed to put your car on a dyno?
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