Just be careful with 17" wheels and spacers. 16" will work. There is not much fender clearance with any other than the OEM 205 tires. Any larger tire will rub especially with spacers.Brake pads are not necessary either. The brakes are excellent. As I have told many people, if you are going all hard on braking in autocross you're losing time... In a school in July I had a student in a WRX who would hit the brakes like he was landing on an aircraft carrier. I got in, barely braked at all and beat his time by 3 seconds.