Hey guys hello from new Zealand . I have a 68 cutlass supreme coupe I'm thinking bout new wheels for my girl .I'm undecided what style to go either a pro street style with 15in rears and 17in fronts or a modern style of 20in rears and 18in fronts . My question is what width wheels will fit on the rear could I get a 10in wide wheel on the rear if so what back spacing would I need?

 

Why would you want to screw up a nice car?