I have been receiving a lot of questions about this, and the website has not gotten the winter packages up for the M3, so I am putting winter package info out here for everyone.
BMW Recommended winter setup is 235/40R18 with 18x8 wheels all around. This will fit, although it does not fill the fender well in the rear. The narrower tires are better in snow and ice.
The best winter wheel is the Sport Edition A7
They have a silver painted and clearcoat finish, and are a direct fit with no spacer. They will even use the original bolts. I have used this style for 3 winters. They will not win any car show trophies, but they have held up well, and they look fine on a BMW .
18x8 is $129. 18x9 is $134 for those who want to keep the staggered setup.
If you want a staggered setup, use 255/40R18 for the Rear. The only snow tire in 265/40 is a Pirelli that will not be here until late October/early November. A little narrower will help in snow anyway. Front can be 245 or 235/40R18.
Tires are pretty much all good. Most popular are the Bridgestone Blizzak LM-25's and Dunlop Wintersport 3D's. The new Pilot Alpin PA3's look very good as well. The Pirellis and Continentals are the sportiest handling, but the least focused on snow, more of a cold-weather performance tire, but still much better than all-season tires in snow.
An example cost for a package would be around $1400 with non-staggered Blizzak LM-25's delivered. Add $200 to any package to have BMW original Tire Pressure Monitoring Sensors (TPMS) installed. That will prevent the annoying "low tire pressure" light from coming on. (Unless you really have a flat
The website does not show the wheels yet, but I am always in the office Monday-Friday 10AM-6PM Eastern. 800.428.8355 x660
Our website should have most of this info up soon.
Please visit: http://www.tirerack.com/a.jsp?a=AW8&...nter/index.jsp