I do not use snow tires and always add a hundred or so in the benzes. Most are fairly balanced but the newer ones I think may be more nose heavy. You need at least 5050 weight distribution to achieve a balance in snow for starting stoping and turning. I prefer a little rear bias for myself.

__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.