Tire Size Specification
Verified OEM & Service Reference2026 BMW X3 30i 2.0L TwinPower Turbo (B48 G01) — Tire Size
Recommended interval: Rotate every 5,000–7,500 miles; check cold PSI monthly
Engine / Trim Variant
Factory Tire Size
255/45R20
Rear Factory Size
285/40R20
Technical Specifications
| Front Tire Size | 255/45R20 |
|---|---|
| Rear Tire Size | 285/40R20 |
| Rim / Wheel Size | 20" |
| Matched Trims | 30 xDrive, M50 |
Compatible Aftermarket Options
Direct OEM cross-references- Buy Michelin / Continental / Pirelli 255/45R20 on AmazonMichelin / Continental / Pirelli255/45R20Front
Search query: 255/45R20 tire
- Buy Michelin / Continental / Pirelli 285/40R20 on AmazonMichelin / Continental / Pirelli285/40R20Rear
Search query: 285/40R20 tire
Tire Size Fitment by Engine / Trim (2026 BMW X3)
| Engine / Trim | Oil Spec & Capacity | OEM Oil Filter |
|---|---|---|
| xDrive30i / sDrive30i (2.0L Turbo I4) | 0W-20 • N/A | 11-42-8-575-211 |
| M40i (3.0L Turbo I6) | 0W-20 • N/A | 11-42-8-583-898 |
DIY Fitment & Verification Checklist for 2026 BMW X3
- 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 2026 BMW X3 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 2026 BMW X3?
The primary OEM tire size part number / specification for the 2026 BMW X3 30i 2.0L TwinPower Turbo (B48 G01) is 255/45R20.
Which aftermarket tire size brands fit the 2026 BMW X3?
Compatible aftermarket options include Michelin / Continental / Pirelli 255/45R20, Michelin / Continental / Pirelli 285/40R20.