Tire Size Specification
VIN Verification Required2021 BMW M850i — Tire Size
Recommended interval: Rotate every 5,000–7,500 miles; check cold PSI monthly
Factory Tire Size
245/40R19
Rear Factory Size
275/35R19
Technical Specifications
| Front Tire Size | 245/40R19 |
|---|---|
| Rear Tire Size | 275/35R19 |
| Rim / Wheel Size | 19" |
| Matched Trims | xDrive Convertible, xDrive Coupe, xDrive Gran Coupe |
Compatible Aftermarket Options
Direct OEM cross-references- Buy Michelin / Continental / Pirelli 245/40R19 on AmazonMichelin / Continental / Pirelli245/40R19Front
Search query: 245/40R19 tire
- Buy Michelin / Continental / Pirelli 275/35R19 on AmazonMichelin / Continental / Pirelli275/35R19Rear
Search query: 275/35R19 tire
DIY Fitment & Verification Checklist for 2021 BMW M850i
- Confirm your engine code or trim variant above before ordering parts, as mid-year production changes can affect tire size fitment.
- When purchasing OEM or aftermarket brands (Motorcraft, ACDelco, Mopar, Wix, Fram, Mobil 1, Bosch, NGK), cross-check the Amazon Garage Confirmed Fit badge with your 17-digit VIN.
- Always consult your 2021 BMW M850i owner's manual for exact torque specs and fluid service intervals.
Sources: NHTSA vPIC & OEM Service SpecificationsReport an inaccurate spec or part number
Frequently Asked Questions
What is the OEM tire size specification for a 2021 BMW M850i?
The primary OEM tire size part number / specification for the 2021 BMW M850i is 245/40R19.
Which aftermarket tire size brands fit the 2021 BMW M850i?
Compatible aftermarket options include Michelin / Continental / Pirelli 245/40R19, Michelin / Continental / Pirelli 275/35R19.