Quote:
Originally Posted by AndreyATC
I personally went with 20s, but i had a few reasons
1. M may not take 19'', due to bigger brakes
2. 20s look better
3. 20s ride better/sportier on dry (that's 90% of the winter in tri-state)
4. I had much smaller sidewall on my 335i and did just fine
Remember that blizzard last year? I drove through it in my 335i from Philly to upstate with zero issues. And this was just RWD car with low clearance
So, 20s vs 19s is a wash on this car
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The view from Canada...
Common wisdom is to go for narrower tires to cut through snow better (rally cars use narrow tires for mud, sand and snow). While a wider contact surface makes sense for ice traction, it is detrimental on hard-packed and icy roads because of the ruts and irregular surface - wde tires "bounce" you around with ruts.
Also, going to a high profile provides more "give" if you hit something at speed (ice ruts).
Because of the higher profile, I stick with RFTs to give me the stiff BMW ride I paid for.