Tire size

My 72 scamp fit 245/60r15. With a solid 1/2" clearance between unrolled fenders and unmoved springs. With moved springs and rolled fender I'm confident I can do 255 if not 265. Maybe in the future.

If you are unsure if your's will fit. Get the car level. Drop a plumb bob of your two contact points (most likely inner fender lip and springs). Measure between the two to, minus 1/2 in, and that will tell you the max width you can fit. Now. Measure from where the wheel mounts too each of the plumb bob. That will tell you where you need your wheel to be centered in order to fit the maximum tire size.

Do this for BOTH sides. You never know how well centered your axle is. Mine was actually about an 1/8 maybe 3/16 out between the two sides.

Hope this makes sense.