When I was at the track last month I had a good discussion with the Yokohoma rep and for the Advant Sport tires he said for street 35psi all the way around is the way to go. As for tracking, after looking at my tire wear he decided to start my fronts at 33psi and the rear at 34psi. As the day went on we set the front to 32psi and rear at 33psi and the wear looked perfect so that is what I stayed at for the rest of the weekend. I will start with those psi’s this weekend at H2R and see what happens. Hope this helps.
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