2025 Maserati GranCabrio tire size
Most common factory size
P265/30R20
- Factory sizes
- 1
- Across 3 trims
- Trims with no size
- 1
- Diameter
- 26.26 in
- Revs per mile
- 768
Tire sizes by trim
Source marks: one source
| Size | Trims | Width, mm | Sidewall, % of width | Rim, in | Diameter, in | Sidewall, in | Revs per mile |
|---|---|---|---|---|---|---|---|
| P265/30R20 | All 3 trims | 265 | 30 | 20 | 26.26 | 3.13 | 768 |
What P265/30R20 means
| Part | Number | Meaning |
|---|---|---|
| Type | P | Passenger car tire. |
| Width | 265 mm | Tread width. 10.4 in. |
| Sidewall | 30 | Sidewall height is 30% 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 |
|---|---|---|---|---|
| 265/35R19 | 19 | 26.30 | +0.2% | 59.9 mph |
| 305/30R19 | 19 | 26.20 | -0.2% | 60.1 mph |
| 225/35R20 | 20 | 26.20 | -0.2% | 60.1 mph |
| 235/40R19 | 19 | 26.40 | +0.5% | 59.7 mph |
| 225/40R19 | 19 | 26.09 | -0.7% | 60.4 mph |
| 235/35R20 | 20 | 26.48 | +0.8% | 59.5 mph |
| 255/35R19 | 19 | 26.03 | -0.9% | 60.5 mph |
| 255/30R20 | 20 | 26.02 | -0.9% | 60.5 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