the vx and the snow

[Triathlete]

Just FYI, the rear differential on the VX is full time LSD. That's why you can't run the spare tire on the rear at anytime, you must move a front wheel to the rear and always run the small spare on the front axel only or you'll damage the LSD mechanism.

Actually it has to do with the TOD. With the spare in the wrong place the TOD will go crazy thinking that there is a tire slipping.