2021 BMW X5 tire size
Most common factory size
P275/45R20
- Factory sizes
- 1
- Across 4 trims
- Trims with no size
- 1
- Diameter
- 29.74 in
- Revs per mile
- 678
Tire sizes by trim
Source marks: one source
| Size | Trims | Width, mm | Sidewall, % of width | Rim, in | Diameter, in | Sidewall, in | Revs per mile |
|---|---|---|---|---|---|---|---|
| P275/45R20 | All 4 trims | 275 | 45 | 20 | 29.74 | 4.87 | 678 |
What P275/45R20 means
| Part | Number | Meaning |
|---|---|---|
| Type | P | Passenger car tire. |
| Width | 275 mm | Tread width. 10.8 in. |
| Sidewall | 45 | Sidewall height is 45% of the width. |
| Construction | R | Radial tire. |
| Rim | 20 in | Fits 20 in wheels. |
Other sizes that fit
Within 3% of the stock diameter. A common shop guideline, not a maker spec.
| Size | Rim, in | Diameter, in | Change | Speedo reads at 60 mph |
|---|---|---|---|---|
| 245/45R21 | 21 | 29.68 | -0.2% | 60.1 mph |
| 275/50R19 | 19 | 29.83 | +0.3% | 59.8 mph |
| 275/40R21 | 21 | 29.66 | -0.3% | 60.2 mph |
| 245/50R20 | 20 | 29.65 | -0.3% | 60.2 mph |
| 225/60R19 | 19 | 29.63 | -0.4% | 60.2 mph |
| 245/55R19 | 19 | 29.61 | -0.5% | 60.3 mph |
| 285/40R21 | 21 | 29.98 | +0.8% | 59.5 mph |
| 255/45R21 | 21 | 30.04 | +1.0% | 59.4 mph |
Checked against 292 factory sizes listed for 2009-2027 US models.
What this cannot tell you
Tire pressure is on the driver door sticker. Not in this data.
Optional wheel packages may differ.
- Two or more sources agree
- One source
- Model-level or estimate
- Sources differ