2024 Audi S6 tire size
Most common factory size
P255/35R21
- Factory sizes
- 1
- Across 3 trims
- Diameter
- 28.03 in
- Revs per mile
- 720
Tire sizes by trim
Source marks: one source
| Size | Trims | Width, mm | Sidewall, % of width | Rim, in | Diameter, in | Sidewall, in | Revs per mile |
|---|---|---|---|---|---|---|---|
| P255/35R21 | All 3 trims | 255 | 35 | 21 | 28.03 | 3.51 | 720 |
What P255/35R21 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 | 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 |
|---|---|---|---|---|
| 255/40R20 | 20 | 28.03 | +0.0% | 60.0 mph |
| 225/45R20 | 20 | 27.97 | -0.2% | 60.1 mph |
| 285/35R20 | 20 | 27.85 | -0.6% | 60.4 mph |
| 245/35R21 | 21 | 27.75 | -1.0% | 60.6 mph |
| 265/35R21 | 21 | 28.30 | +1.0% | 59.4 mph |
| 235/45R20 | 20 | 28.33 | +1.1% | 59.4 mph |
| 245/40R20 | 20 | 27.72 | -1.1% | 60.7 mph |
| 265/40R20 | 20 | 28.35 | +1.1% | 59.3 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