Like all 3 Series E90 BMWs, xDrives come with run-flat tires and no spare. It's difficult to engineer a winter tire with good ice grip and the ability to handle the duress of running 50 miles with 0 lbs. of air pressure. Therefore, there are no compatible run-flat winter tires for the xDrive with the ice grip of a Studless Ice and Snow winter / snow tire.
Winter / Snow Tire Size
Depending on engine and trim, your Original Equipment sizing ranges between 16" to 18" with staggered (wider rear tire) options.
328i xDrives can run either 16" or 17" winter / snow tires while 335i xDrives are limited to 17" or 18" options because 16" wheels won't clear the larger 335i xDrive brakes. Personally, I believe the 205/55-16 Studless Ice and Snow tires would be an ideal fit for a Winter / Snow Tire & Wheel Package.
Tire Pressure Monitoring System (TPMS)
The US-spec E90 3 Series uses valve-stem-mounted Direct TPMS that you can reset yourself by following instructions in your owner's manual.
16" Studless Ice and Snow Winter / Snow Tire & Wheel Package for 328i xDrive
When selecting a Studless Ice and Snow tire for the 328i xDrive, I'd recommend the 205/55-16 Michelin X-Ice Xi2 on 16x7.5 35mm offset Sport Edition A7 wheels in either silver or black for $1044.**
17" Studless Ice and Snow Winter / Snow Tire & Wheel Package for 335i xDrive
For a Studless Ice and Snow tire for the 335i xDrive I'd recommend the 225/45-17 non-run-flat Continental ExtremeWinterContact on the Sport Edition A7 at $1228.**
2011 BMW xDrive 3 Series FAQ:
**Prices subject to change, including sensors and excluding shipping
Winter / Snow Tire Size
Depending on engine and trim, your Original Equipment sizing ranges between 16" to 18" with staggered (wider rear tire) options.
328i xDrives can run either 16" or 17" winter / snow tires while 335i xDrives are limited to 17" or 18" options because 16" wheels won't clear the larger 335i xDrive brakes. Personally, I believe the 205/55-16 Studless Ice and Snow tires would be an ideal fit for a Winter / Snow Tire & Wheel Package.
Tire Pressure Monitoring System (TPMS)
The US-spec E90 3 Series uses valve-stem-mounted Direct TPMS that you can reset yourself by following instructions in your owner's manual.
16" Studless Ice and Snow Winter / Snow Tire & Wheel Package for 328i xDrive
When selecting a Studless Ice and Snow tire for the 328i xDrive, I'd recommend the 205/55-16 Michelin X-Ice Xi2 on 16x7.5 35mm offset Sport Edition A7 wheels in either silver or black for $1044.**
 205/55-16 Michelin X-Ice Xi2 |  16x7.5 35mm offset Silver Painted Sport Edition A7 |  16x7.5 35mm offset Black Painted Sport Edition A7 |
17" Studless Ice and Snow Winter / Snow Tire & Wheel Package for 335i xDrive
For a Studless Ice and Snow tire for the 335i xDrive I'd recommend the 225/45-17 non-run-flat Continental ExtremeWinterContact on the Sport Edition A7 at $1228.**
 225/45-17 Continental ExtremeWinterContact | 17x7.5 32mm offset Silver Painted Sport Edition A7 | 17x7.5 32mm offset Black Painted Sport Edition A7 |
2011 BMW xDrive 3 Series FAQ:
- Will the Sport Edition A7 accept my O.E. BMW center cap? Yes.
- If my vehicle is equipped with the Sport Package or the M Sport Package with wider tires in the back, is it okay to run the same tire size in the front and back? Yes. Since 225/45-17, 255/40-17, 225/40-18 and 255/35-18 are all 25" in overall diameter you'll be maintaining the same overall diameter, therefore this will have no effect on the vehicle's Dynamic Traction Control.
- If I'm using my Sport Package or M Sport Package wheels, is it okay to run a narrower size tire on the wider rear rim? Yes, a 17x8.5 wheel will accept a 225/45-17 tire and a 18x8.5 wheel will accept a 225/40-18 tire. Just be more careful when parallel parking because you'll have less rubber protruding beyond the edge of the rim. So, it's easier to scrape a wheel against a curb.
**Prices subject to change, including sensors and excluding shipping
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