Just wondering what kind of tires everyone is using during the winter i just purchased my 07 denali 2 weeks ago. Purchased for my wife to replace mini van that could not make it up the driveway in the winter. Now she cannot go down the driveway for fear of sliding into the road. We also have problems stopping. I am not sure if it is just the shear weight of the truck or the tires suck. Currently it has a set of maxxis marauder II they are practically brand new. The tread on them is on the sporty side and they are v speed rated. Do you all think it is the tires or the weight of the truck. I didn't expect it would be so hard to stop this thing. I just don't want to waist money on tires i and have it still slide so much. So I thought I would ask the experts...