i got it now. so this is minimum to actual. for 6.5" the offset should be at a minimum +53mm to an actual of +55mm. so i wonder how close the 7.5 and 8.0 "actual" is? else we're talking wheel bearing problems. looks like staying closest to the "actual" is the way to go. so it looks like a 48mm in an 8" wide would be better than a 48mm in a 7.5" wide. unless of course there is some reason why 1 more mm the other way would mess something up?
6.5" ....... +53 to +55
7.0" ....... +50 to +53
7.5" ....... +47 to +50
8.0" ....... +43 to +47
> Dear Mr. X:
> Thank you for visiting the Subaru Web site and for your message. The only
> tires and wheel specifications that we recommend for the WRX models are:
> 16 x 6.5JJ wheels with an offset of 55 mm and 205/55 R16 tires or 17 x 7JJ
> wheels with an offset of 53 mm and 215/45 R17 tires.
> Thanks for the opportunity to be of assistance. If you need any future
> assistance, please feel free to contact us again.
> Best wishes,
> John J. Mergen
> Subaru of America, Inc.