Wheel Fitment Calculator
I didn't create it, and I no longer remember who did, but this is a handy spreadsheet that graphically demonstrates the effect of changing offset. It also calculates a bunch of other cool stuff like change in speedo readings for various tire size changes, etc
Edit - Duh, the author is right on the spreasheet!
'03 X5 4.4i Blue/Tan
'06 E90 330Xi 6MT Sparkling Graphite/Terra
'08 E92 M3 6MT Jerez/Speed Cloth <-- Evil Twin
Last edited by rvacha; 02-16-2008 at 10:46 AM.
Reason: Corrupted ZIP file deleted