Powersports tires / CSC CSC Tire Sizes Verified tire fitment for 5 CSC powersports models. Pick yours for the exact front and rear tire sizes by year. CSC Motorcycles City Slicker110/70-12CSC Motorcycles RX4110/80-19CSC Motorcycles SG250 Cafe Racer90/70-17CSC Motorcycles SG400120/70-17CSC Motorcycles TT25090/70-17