Winter - Looking for a hair more traction
I've got a 135i with FBO+Meth which is entirely useless in winter, lol
I had my winters put on today, and am looking to get a bit more traction in the rear. It understeers horribly in the slush but I can work around that.
Usually I drive my subaru in the winter, but the BMW is a much, much nicer car.
Should I just put more ballast over the rear axle?
Tires are currently Pirelli Winter Sottozero Serie II Run Flat but I have no interest at this point of swapping my tires. I'm running the factory pressures.
2016 e63 amg s wagon matte white
2012 bmw m5 JB4+BCM