255/45 R21 tires: vehicles that use this size
255/45 R21 is a factory or optional tire size on 3 models.
| Vehicle | Years | Fitment |
|---|---|---|
| Audi SQ6 e-tron | 2025 | Factory · front |
| Audi SQ6 Sportback e-tron | 2025 | Factory · front |
| Porsche Macan | 2024–2025 | Optional · front |
How to read 255/45 R21
- 255
- Tread width in millimetres
- 45
- Sidewall height, % of width
- R
- Radial construction
- 21
- Wheel diameter in inches
Overall diameter: about 30.0" · Sidewall: 115 mm