70 chevelle 17x10.5" wheel 315/35/17 tire backspace ????

[7TSS]

I already mocked up some 305/45-18's. Had 'em on 18 x 9.5's w/ 5.5" bs. pretty tight fit.


Now I have the same tires on 18 x 10 w/ 6" bs. I don't want to roll the wheelwell lips so I pushed the tires in a little. They clear the frame easily but not sure on the inner tub. Might need a small spacer. We'll see when the body goes back on.