2023 Porsche 911 tire size
Most common factory size
P245/35R20
- Factory sizes
- 4
- Across 18 trims
- Trims with it
- 11 of 18
- Trims with no size
- 20
- Diameter
- 26.75 in
- Revs per mile
- 754
Tire sizes by trim
Source marks: one source
| Size | Trims | Width, mm | Sidewall, % of width | Rim, in | Diameter, in | Sidewall, in | Revs per mile |
|---|---|---|---|---|---|---|---|
| P245/35R20 | Carrera RWD, Carrera 4 AWD, Carrera T RWD, Carrera S RWD, Targa 4 AWD, Carrera 4S AWD +5 more | 245 | 35 | 20 | 26.75 | 3.38 | 754 |
| P255/35R20 | GT3 RWD, GT3 w/Touring Pkg RWD, Turbo AWD, Turbo S AWD, Sport Classic RWD | 255 | 35 | 20 | 27.03 | 3.51 | 746 |
| P245/45R19 | Dakar AWD | 245 | 45 | 19 | 27.68 | 4.34 | 729 |
| P275/35R20 | GT3 RS RWD | 275 | 35 | 20 | 27.58 | 3.79 | 731 |
What P245/35R20 means
| Part | Number | Meaning |
|---|---|---|
| Type | P | Passenger car tire. |
| Width | 245 mm | Tread width. 9.6 in. |
| Sidewall | 35 | Sidewall height is 35% 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 |
|---|---|---|---|---|
| 285/30R20 | 20 | 26.73 | -0.1% | 60.0 mph |
| 245/40R19 | 19 | 26.72 | -0.1% | 60.1 mph |
| 195/50R19 | 19 | 26.68 | -0.3% | 60.2 mph |
| 275/35R19 | 19 | 26.58 | -0.6% | 60.4 mph |
| 225/45R19 | 19 | 26.97 | +0.8% | 59.5 mph |
| 275/30R20 | 20 | 26.50 | -1.0% | 60.6 mph |
| 235/35R20 | 20 | 26.48 | -1.0% | 60.6 mph |
| 255/35R20 | 20 | 27.03 | +1.0% | 59.4 mph |
| Size | Rim, in | Diameter, in | Change | Speedo reads at 60 mph |
|---|---|---|---|---|
| 255/40R19 | 19 | 27.03 | +0.0% | 60.0 mph |
| 225/45R19 | 19 | 26.97 | -0.2% | 60.1 mph |
| 295/35R19 | 19 | 27.13 | +0.4% | 59.8 mph |
| 305/30R20 | 20 | 27.20 | +0.7% | 59.6 mph |
| 245/35R20 | 20 | 26.75 | -1.0% | 60.6 mph |
| 265/35R20 | 20 | 27.30 | +1.0% | 59.4 mph |
| 285/30R20 | 20 | 26.73 | -1.1% | 60.7 mph |
| 235/45R19 | 19 | 27.33 | +1.1% | 59.3 mph |
| Size | Rim, in | Diameter, in | Change | Speedo reads at 60 mph |
|---|---|---|---|---|
| 275/40R19 | 19 | 27.66 | -0.1% | 60.0 mph |
| 245/40R20 | 20 | 27.72 | +0.1% | 59.9 mph |
| 245/50R18 | 18 | 27.65 | -0.1% | 60.1 mph |
| 215/45R20 | 20 | 27.62 | -0.2% | 60.1 mph |
| 225/55R18 | 18 | 27.74 | +0.2% | 59.9 mph |
| 175/55R20 | 20 | 27.58 | -0.4% | 60.2 mph |
| 275/35R20 | 20 | 27.58 | -0.4% | 60.2 mph |
| 155/70R19 | 19 | 27.54 | -0.5% | 60.3 mph |
| Size | Rim, in | Diameter, in | Change | Speedo reads at 60 mph |
|---|---|---|---|---|
| 175/55R20 | 20 | 27.58 | 0.0% | 60.0 mph |
| 155/70R19 | 19 | 27.54 | -0.1% | 60.1 mph |
| 215/45R20 | 20 | 27.62 | +0.1% | 59.9 mph |
| 275/30R21 | 21 | 27.50 | -0.3% | 60.2 mph |
| 275/40R19 | 19 | 27.66 | +0.3% | 59.8 mph |
| 245/45R19 | 19 | 27.68 | +0.4% | 59.8 mph |
| 245/40R20 | 20 | 27.72 | +0.5% | 59.7 mph |
| 245/35R21 | 21 | 27.75 | +0.6% | 59.6 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