Wheel tire Combo

6.5-8" wide is the range . 15" wheels are standard with 4-4.5"backspace . If you use 235/60R15 tires the center of the tire is almost in the center of the factory wheelwell and there is about 1/2" clearance to the spring . There may be trouble with 245's . I have a '72 Scamp also and my 235/Sticky Mickey fit perfect . Remember , check the width of the tire at the bulge when inflated . I have actually put 275/75's in the rear but it looks like a suv . lol , Tom