18X10 Rear Wheels

[bobdogwv]

Hello all, I am looking for some help with wheel / tire sizes for my 97 Boxster. Now I know that Porsche did not recommend 18" wheels on the 97, so with that aside I am looking for some advice. I have a set of BSA 18X9 ET 48 for the front and 18X10 ET 52 for the rears. I have not had tires mounted on the rims yet and just wanted to check on the car for fitment. It looks like the fronts will fit well with the correct tire size, but when I placed the 18X10's on the rear they were right up against the strut. As I said they are a 52mm offset rim so what size spacer should I use? Any help here would be appreciated!