2025 Ferrari 12Cilindri tire size
Most common factory size
P275/35R21
- Factory sizes
- 1
- Across 1 trim
- Trims with no size
- 1
- Diameter
- 28.58 in
- Revs per mile
- 706
Tire sizes by trim
Source marks: one source
| Size | Trims | Width, mm | Sidewall, % of width | Rim, in | Diameter, in | Sidewall, in | Revs per mile |
|---|---|---|---|---|---|---|---|
| P275/35R21 | Coupe RWD | 275 | 35 | 21 | 28.58 | 3.79 | 706 |
What P275/35R21 means
| Part | Number | Meaning |
|---|---|---|
| Type | P | Passenger car tire. |
| Width | 275 mm | Tread width. 10.8 in. |
| Sidewall | 35 | Sidewall height is 35% 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 |
|---|---|---|---|---|
| 275/40R20 | 20 | 28.66 | +0.3% | 59.8 mph |
| 245/45R20 | 20 | 28.68 | +0.4% | 59.8 mph |
| 245/40R21 | 21 | 28.72 | +0.5% | 59.7 mph |
| 285/30R22 | 22 | 28.73 | +0.5% | 59.7 mph |
| 305/35R20 | 20 | 28.41 | -0.6% | 60.4 mph |
| 265/40R20 | 20 | 28.35 | -0.8% | 60.5 mph |
| 235/45R20 | 20 | 28.33 | -0.9% | 60.5 mph |
| 265/35R21 | 21 | 28.30 | -1.0% | 60.6 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