When I drove up to a ski resort near Tahoe, with all-season's on my SUV, it made no difference (to the "officials") when the weather got bad. I HAD to put chains on. So it depends on where you need to go when you get there...

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2008 X5 4.8i | Wheels: Summer> style 336 20" RFT; Winter> style 214 Ferric Grey 20" RFT | Aero kit | ESS E-Flash tune | V1 | LCI Rear Tail Lights | Coding completed | Engine replaced at 90K