BMW X3 M tire size
The most common factory tire size for the BMW X3 M is 255/40R21 front, 265/40R21 rear, on 7 of the 10 year and trim fits listed. The table lists every year from 2020 to 2024 and the size each trim was built with. Pick your year and trim to see the tires that fit.
BMW X3 M tire sizes by year
| Year | Factory tire size | Trims |
|---|---|---|
| 2024 | 245/40R21 front, 275/35R21 rear | Base |
| 245/45R20 front, 275/40R20 rear | Base | |
| 255/40R21 front, 265/40R21 rear | Competition | |
| 255/45R20 | Base | |
| 2023 | 245/40R21 front, 275/35R21 rear | Base |
| 245/45R20 front, 275/40R20 rear | Base | |
| 255/40R21 front, 265/40R21 rear | Competition | |
| 255/45R20 | Base | |
| 2022 | 245/40R21 front, 275/35R21 rear | Base, Competition |
| 245/45R20 front, 275/40R20 rear | Base | |
| 255/40R21 front, 265/40R21 rear | Competition | |
| 255/45R20 | Base | |
| 2021 | 255/40R21 front, 265/40R21 rear | Base, Competition |
| 255/45R20 front, 265/45R20 rear | Base | |
| 2020 | 255/40R21 front, 265/40R21 rear | Base, Competition |
| 255/45R20 front, 265/45R20 rear | Base |
Check your own tire
A trim can be sold with more than one wheel size. The size printed on the sidewall of your current tire, or on the placard in the driver's door jamb, is the one your vehicle has.