Wheel question

[gardoni]

I've got a line on a set of twist wheels but am in a bit of a bind because I don't know much about wheel fitment and the guy selling the wheels doesn't know much about them and couldn't find a part number. He says they measure out as:
17.5 x 7 55 offset (stamped next to valve stem) fronts
17.5 x 8.5 50 offset rears



I am guessing these are 17" wheels- IIRC wheels measure a bit bigger than their stated size.

If I understand things correctly I'd need to run 5mm spacers on the rear?

Many thanks!
-Gardner

[roofbolter]

I am running 18" twists on my car, the backs are 65 mm and I am using a 15mm spacer. No rubbing. I don't think you would need a spacer.

[Newsboy]

On the front wheels, you might want to run 5mm spacers to prevent tire scrub at full turn in. Your original wheels i believe had 52 offset. You could try the wheels 1st to determine if the tires rub. I believe your 50 rears should be fine. You might want to check behind the tire in the right rear wheel well, to make sure you have enough clearance between the top of the tire and the oil line.

[gardoni]

Many thanks!