I think even with VSA fully disabled it still locks the front.I think if you do the move to completely disable the vsa stuff then it'll lock only the rear wheel...I've been told that have yet to try it out...im doing it on snow...not in trays...no snow yet:
I’m 99% sure that it’s impossible unless you can tweak the electronic parking brake to only lock the back wheels but that’s probably impossible. However, for u snow drifting mfs out there, I’ve done it on gravel but works the same I’m guessing, do a Scandinavian flick.I've wondered this forever. I'd like to know if anyone figured it out.