Hello. They're 18" offsets of the wheels dont matter as i run spacers that we machined to fit

Thanks mate. She's an '86 951, so early offset. The wheels have custom offsets, +24 on the front and -1 on the rear. They are 18 x 9.5 all round, and the 265 wide tires fit with mm to spare. I had to remove the lip on the rear arch, didn't have to do anything on the front as it is already rolled there from factory. I'm also running 3 deg of camber up front, and 2 in the rear, with hard suspension and big sway bars. I wouldn't recommend such an aggressive offset for cars with soft stock suspension and no camber.