Cole
Expedition Leader
found this link on the chayenne build
http://journaldu4x4.com/?Porsche-Cayenne-S-4-5-L-V8
Very cool. Interesting that they run a 275-65/18 on it.
Think I'm picking up some 265/65/18s tomorrow to try out. (The size that was on the Transsyberia Cayennes)