305/30 R21 tires: vehicles that use this size
305/30 R21 is a factory or optional tire size on 14 models.
| Vehicle | Years | Fitment |
|---|---|---|
| Aston Martin DBS | 2019–2024 | Factory · rear |
| Aston Martin Valour | 2024 | Factory · rear |
| Audi RS e-tron GT | 2022–2024 | Factory · rear |
| Audi RS e-tron GT Performance | 2025 | Factory · rear |
| Mercedes Benz AMG GT 63 | 2024–2025 | Factory · rear |
| Mercedes Benz AMG GT 63 Pro | 2025 | Factory · rear |
| Mercedes Benz SL63 | 2022–2025 | Factory · rear |
| Porsche 911 | 2020–2025 | Factory |
| Porsche Taycan | 2020–2025 | Factory · rear |
| Audi e-tron GT | 2022–2024 | Optional · rear |
| Mercedes Benz AMG GT 55 | 2024–2025 | Optional · rear |
| Mercedes Benz AMG GT 63S E Performance | 2025 | Optional · rear |
| Mercedes Benz SL43 | 2023–2025 | Optional · rear |
| Mercedes Benz SL55 AMG | 2022–2025 | Optional · rear |
How to read 305/30 R21
- 305
- Tread width in millimetres
- 30
- Sidewall height, % of width
- R
- Radial construction
- 21
- Wheel diameter in inches
Overall diameter: about 28.2" · Sidewall: 92 mm