So, I have a 05 Suzuki Boulevard c50 I made into a bobber and I'm wanting to put a car tire on my rear stock rim. It has the stock 170/80 15 on it now and was told I could put a 200/70 15 on it no problem, but they cost $300+, does anyone know what size car tire is equivalent to a 200/70 15 MC tire? Any help would be appreciated.