2025 Karma Revero tire size
Most common factory size
P245/40R21
- Factory sizes
- 1
- Across 4 trims
- Trims with no size
- 6
- Diameter
- 28.72 in
- Revs per mile
- 702
Tire sizes by trim
Source marks: one source
| Size | Trims | Width, mm | Sidewall, % of width | Rim, in | Diameter, in | Sidewall, in | Revs per mile |
|---|---|---|---|---|---|---|---|
| P245/40R21 | All 4 trims | 245 | 40 | 21 | 28.72 | 3.86 | 702 |
What P245/40R21 means
| Part | Number | Meaning |
|---|---|---|
| Type | P | Passenger car tire. |
| Width | 245 mm | Tread width. 9.6 in. |
| Sidewall | 40 | Sidewall height is 40% of the width. |
| Construction | R | Radial tire. |
| Rim | 21 in | Fits 21 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 |
|---|---|---|---|---|
| 285/30R22 | 22 | 28.73 | +0.1% | 60.0 mph |
| 245/45R20 | 20 | 28.68 | -0.1% | 60.1 mph |
| 275/40R20 | 20 | 28.66 | -0.2% | 60.1 mph |
| 275/35R21 | 21 | 28.58 | -0.5% | 60.3 mph |
| 285/35R21 | 21 | 28.85 | +0.5% | 59.7 mph |
| 325/35R20 | 20 | 28.96 | +0.8% | 59.5 mph |
| 225/45R21 | 21 | 28.97 | +0.9% | 59.5 mph |
| 285/40R20 | 20 | 28.98 | +0.9% | 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