well i also have a 1991 Eclipse GSX track car. if you put different size tires (more then 2/32's different) you can potentially heat up your differential and transaxle enough where the compenents will break. I've got Nitto's in the front and Kumho's in the rear, and that is supposidely a bad idea

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2003 BMW X5 4.4 Jet Black exterior, black interior with dark brown poppel interior