Dmax did real well the whole trip to Moab... Even over the Eisenhower pass/tunnel over the Rockies. 9mg avg for the trip. I got a bit concerned towing through the snow and a bit of hard packed/icy surfaces. Chain/ snow laws were in place It wants to spin the tires pretty easy on wet slippery conditions. I just kept momentum up to 40-45 and was careful w the throttle. a couple big rigs run off the road, so it was a bit exciting!