Weld Pro Star 15X7 LBP

I had these mounted for a short time on the back of my 68 Dart. The springs are in the stock location with no suspension mods except for super stock springs. I had 235/60/15 drag radial tires mounted on them. I have since went to a different wheel with the same demensions and I have 255/60/15 drag radials mounted on them without any suspension mods other than the super stock springs as listed before. My car is not mini-tubbed.