Yea the discussion can go on and on about snow. Momentum is a happy thing. But when the NDT's eat down to the smooth iced up troughs things come to a halt. Weight and airring down will help as demonstrated by some ancient news reels about the DUKW when moving from water to soft sand. Chains, now that is a real improvement. Maybe Cit will show a good shot of his Euro chains on Argyle.
I had an old Captian who was in Artillery in Korea and he said when transporting ammo in the mountians if not for chains most of the trucks would be over the edge... He never could understand why they sent only one soldier in the truck to get more ammo and the supply dump guys would not help much so one day he asked. Well the CO said, " If you go off the road I lose 2 soldiers and a truck. This way I only lose 1 soldier and a truck."