Tony,
as I have 19" on my E90 for the summer and 18" in the winter I figured
I'd chime in
....
If you go with 19" be aware that you won't have much rubber on your rims,
the sidewalls are going to be very thin !
On NE roads this can be a challenge, I already bent two wheels (no visible
damage just annoying vibration, ended up buying two new wheels) and
that's without even hitting a pothole hard. I have the Hartge Classic 2 which
so far have held up pretty well.
I'd only recommend 19" for someone who's willing to avoid potholes/dips
at all costs as otherwise it will be an expensive exercise ...
On my winter wheels (OEM Sportwheels (162) powder coated black)
I have 18" RFT winter tires (Dunlop) and I've been pretty happy so far,
also been driving the Bridgestone RFT the first 2000 miles without any
major complainst (however there's a customer complaint notice where
you can get your Bridgestone RFT replaced with Conti RFTs (but you
have to complain about roadnoise first ....)) .
- Jan