Rick, I had a 65 Valiant that I was able to run 245/60/15 on. Rims were Wheel Vintiques 15 x 8 w. 4.875 in. backspace. Stock 7.25, stock wheel wells, new ESPO springs arched 2 in. over stock. Never had an issue unless I had two 200+ lb. guys in the back. :thumleft: