2025 BMW iX tire size
Most common factory size
P235/60R20
- Factory sizes
- 2
- Across 2 trims
- Trims with it
- 1 of 2
- Diameter
- 31.10 in
- Revs per mile
- 648
Tire sizes by trim
Source marks: one source
| Size | Trims | Width, mm | Sidewall, % of width | Rim, in | Diameter, in | Sidewall, in | Revs per mile |
|---|---|---|---|---|---|---|---|
| P235/60R20 | xDrive50 AWD | 235 | 60 | 20 | 31.10 | 5.55 | 648 |
| P255/50R21 | M60 AWD | 255 | 50 | 21 | 31.04 | 5.02 | 650 |
What P235/60R20 means
| Part | Number | Meaning |
|---|---|---|
| Type | P | Passenger car tire. |
| Width | 235 mm | Tread width. 9.3 in. |
| Sidewall | 60 | Sidewall height is 60% 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 |
|---|---|---|---|---|
| 285/45R21 | 21 | 31.10 | -0.0% | 60.0 mph |
| 255/60R19 | 19 | 31.05 | -0.2% | 60.1 mph |
| 255/55R20 | 20 | 31.04 | -0.2% | 60.1 mph |
| 255/50R21 | 21 | 31.04 | -0.2% | 60.1 mph |
| 235/65R19 | 19 | 31.03 | -0.2% | 60.1 mph |
| 285/50R20 | 20 | 31.22 | +0.4% | 59.8 mph |
| 275/55R19 | 19 | 30.91 | -0.6% | 60.4 mph |
| 275/50R20 | 20 | 30.83 | -0.9% | 60.5 mph |
| Size | Rim, in | Diameter, in | Change | Speedo reads at 60 mph |
|---|---|---|---|---|
| 255/45R22 | 22 | 31.04 | -0.0% | 60.0 mph |
| 255/55R20 | 20 | 31.04 | +0.0% | 60.0 mph |
| 285/45R21 | 21 | 31.10 | +0.2% | 59.9 mph |
| 235/60R20 | 20 | 31.10 | +0.2% | 59.9 mph |
| 285/40R22 | 22 | 30.98 | -0.2% | 60.1 mph |
| 285/50R20 | 20 | 31.22 | +0.6% | 59.7 mph |
| 275/50R20 | 20 | 30.83 | -0.7% | 60.4 mph |
| 295/40R22 | 22 | 31.29 | +0.8% | 59.5 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