I'm running 15" wheels with 8" rims in front (Gotti wheels) and 11" rims in back. The idea of running a staggered setup making sure each inch of tire has the same amount of weight given the overall weight balance of the car.
My car is a modified 914 Porsche, with a 2.4-4 and weighs in at 1721, which I have to meet to run SCCA XP class. The car has a full (heavy) cage as I run hill climbs.
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