I have to admit I don't have any issues with the winter mod and physics... Why's this? Because I plan ahead when I'm driving, I slow down with enough time to gentle come to a compeltely stop. Harsh braking and late braking will mostly result in your truck sliding. Another bit of advice is think about your roads, if they're slightly twisty, maybe it's worth going a little bit slower than the suggested speed limit. People would rather you drive safely even if it means going slightly slower if it means a higher quality driver! Just remember to take your time and plan ahead.