Quote:
Originally Posted by ZPrime
(bold is mine)
Except that's not how snow & ice work...
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Says the guy asking for advice to the guy that drove his car all of last winter
I wasn't saying it defied physics, which is why I said "I" prefer staggered. A square set-up would likely be 245's all around, and contact patch reduction is minimal. BMW does not offer a square set-up, you'd have to go 3rd party.
Do make sure it's 18s though...there's some 19s out there with very little tread depth that I personally find useless in snow. The higher sidewall of the 18's allows for better snow treads.
EDIT: I wanted to add that, in any significant snow depth, the traction control is very, very sensitive. I highly recommend always keeping the car in MDM mode (single press of traction button) since it allows a bit more wheel spin. Otherwise if it even thinks there might be a slightly possibility there is spin it cuts power, it's a huge PITA.