Sorry Aaron I forgot to clarify, R4 (it may be R3 - I forget?) is a rare control. It is chains mandatory even with AWD and 4WD.
It's the control we see when I80 closes from all the "invincable" suv's going 70 over the summit, then slamming on the bakes on the downhill side.
All lesser controls I agree. AWD with snows is a blast!
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