2021 Audi S4 tire size
Most common factory size
P255/35R19
- Factory sizes
- 1
- Across 3 trims
- Diameter
- 26.03 in
- Revs per mile
- 775
Tire sizes by trim
Source marks: one source
| Size | Trims | Width, mm | Sidewall, % of width | Rim, in | Diameter, in | Sidewall, in | Revs per mile |
|---|---|---|---|---|---|---|---|
| P255/35R19 | All 3 trims | 255 | 35 | 19 | 26.03 | 3.51 | 775 |
What P255/35R19 means
| Part | Number | Meaning |
|---|---|---|
| Type | P | Passenger car tire. |
| Width | 255 mm | Tread width. 10.0 in. |
| Sidewall | 35 | Sidewall height is 35% of the width. |
| Construction | R | Radial tire. |
| Rim | 19 in | Fits 19 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 |
|---|---|---|---|---|
| 255/30R20 | 20 | 26.02 | -0.0% | 60.0 mph |
| 255/40R18 | 18 | 26.03 | +0.0% | 60.0 mph |
| 225/45R18 | 18 | 25.97 | -0.2% | 60.1 mph |
| 225/40R19 | 19 | 26.09 | +0.2% | 59.9 mph |
| 225/35R20 | 20 | 26.20 | +0.7% | 59.6 mph |
| 305/30R19 | 19 | 26.20 | +0.7% | 59.6 mph |
| 265/30R20 | 20 | 26.26 | +0.9% | 59.5 mph |
| 245/30R20 | 20 | 25.79 | -0.9% | 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