Dude DON'T get bigger than 15's on a CLASSIC MUSCLE CAR...I SWEAR every time I see a REAL NICE car(meaning old Muscle Car era car) riding around on 17+" rime I start thinking its gonna stop and Clowns are gonna start jumping out like 10 of them switch drivers and then all pile back in...looks like something out of a CIRCUS! or like a CARTOON car....I have NEVER seen a SINGLE car EVER with 17" wheels/tires that actually looks good not once.....16 is the limit and even thats stretching it. you start getting the rubberband look//HUGE rims and tires that are about 1/4" tall...may be cool for NEW cars but not for Muscle Cars!