I'm looking at the PA4s as well for my E90, but am pretty unfamiliar with what I need for winter wheel and tire sizes. Sounds like 245/40/18 is the way to go for a square winter set.
I've seen a few wheels that I like from **********s, but have never ordered from them before. I spoke to someone there and he recommended the Sportline CS.16: 18x9.5 ET22 and said spacers wouldn't be necessary with that wheel size. Will 245/40/18 tires work? Would I need a larger size tire for that size wheel (255/45/18, for example)?
Did you take your new wheels to Discount Tire for the mounting/balancing, TPMS, etc?
I've used Discount Tire many times and been very happy with their service and pricing. Just curious if you they'll do everything in addition to selling you the PA4s.