Hello, I ran 8" d90's with a 52mm offset on the rear of my golf with 20mm spacers and got a little rub on the inside edge, they sat very close to the swing arm, so I bought 25mm spacers and they were spot on.
With 9" rims you may need to run wider adapters to get the clearence, if the offset is the same - I guess you may have more arch space though if you have the Rallye arches so wider spacers may be ok?
8" on the front should be fine with 25mm spacers.
