I have an fe with continental at's. Here is my milage at slightly over 2k nowBased on the comments in this forum, this seems to be the math...
FE Style roof rack = -4 MPG
BFG All Terrain Tires = -2 MPG
Based on that math, if you can get 21 MPG on a LC LC, you add the FE roof rack that drops to 17 MPG. Add BFG KO2 AT Tires and it drops again to 15 MPG.
Anybody with a FE getting more than 17 MPG?