I'm a newbie here and just picked up an 09 48i (err, see SN). I have 20's with Dueler HP's. I live on Long Island, NY and some of the winters can be cold, even though we had a mild one last year.
Is there any chance I can make it through a typical winter (4" of snow on ground, temps in the 30's) with these?
And anyone have an idea how many more MPG's I can get switching from the 20's to 18's?
Thanks.