Wheel Size

[DenverSteve]

Thanks. I never read my Cayenne wheels. It's obviously different when the front and rear wheels are different.

[thstone]

You'll commonly see the German abbreviation for offset, ET or et. The diameter and width of a wheel are in inches while the offset is in millimeters. For example, 18x8.5 et 45 is a 18" diameter, 8.5" wide wheel with 45mm offset.