Good info, thanks all. I have a good set of steel link chains for the truck, they have been test fitted and work. Will be picking up a set of cables for the TH. I don't expect to have to use them, and if it gets bad, and I do chain up, I will be using my best judgement on whether to continue or find a safe place out of the way of the trajectory of those unlucky folks that think 4x4 will save them. I didn't mention, but I do have some experience in the snow, drove the ski bus for years, and we would chain that up at the first place available when required.