Can you put a 215 65 r15 tire on the rear of a GT? i can find these tires a lot cheaper than at the 60 size. Thanks in advance. These are going on stock diamond spoke 15" rim.
the higher aspect ratio changes your final drive ratio. I've seen them on a car and they frankly look dorky. They give you a tall final gear ratio, but your torque and streetlight performance will be pretty much negatively suffer.
If you want better performance, less strain on the drive train, and just as good gas mileage, go down, not up. Try a 15/55/195.