new to theis forum and I'm almost an audi newbie...just put my order in for a 2007 A3 3.2, now I have to wait 9-12 long weeks for delivery. anyway, here's my question...I am considering buying snow tires/wheels from tirerack.com and would like to get cheapie steel wheels, but they only offer 16" steel wheels for this car. can I safely bolt on 16" wheels even though the car comes with 17" wheels...and what about speedometer error? thanks