The tires I'm running up front are 175, 65 15s, they dont rub i have the adjustable struts, and i got them on the second notch, if i drop it down more the tie-rod assembly bottoms out, i had to grind down each side of the outer tie rod ends cause they scraped the inside of my rim, up front i have 4.5 inch rims, i found that with 5.5 inch rims you can put a wider tire on in the front, with the 4.5 inch a 175 is the widest you can go. Hey Mike T, I remember seing your super at the car show, what size motor are you running??