I am currently running heavily siped 315/75R16 Dick Cepek Mud countrys and am very impressed with their ice performance. I bet they would make it around that steamboat track. Generally mud tires are terrible on the ice, but great in deep snow. I live at 7k feet in the mountains of colorado and have had lots of trouble with unsiped muds in the past. Touch the brakes lock up. I would say that my current DC's are comparable to BFG at wich are pretty good on all but glare ice (where everything is bad) and close to the current Studded General grabber AT2 we have on our other truck. These studded Generals are likely the best tires I have ever experienced in the CO mountains which can be quite hazzardous. I always have confidence in them.
I think a good soft compound mud (Truxus, Dick Cepeck, Mickey Thompson) siped is a reasonable ice tire. If you drive in deep snow also, there is nothing that will do what they do. I can claw 1mm at a time no matter how deep the snow when I am all locked up. If you really want muds that perform on ice get Procomp mts and stud and sipe them. I think the old school firestone/bfg/goodyear muds are too hard to allow siping to be effective.
