Which cars use 315/30R21 tyres?
315/30R21 is a factory tyre size on 3 car models in our data. Its overall diameter is about 722.4 mm.
Size details
- Overall diameter
- 722.4 mm
- Section width
- 315 mm
- Sidewall height
- 94.5 mm
- Rim diameter
- 21″
- Rolling circumference
- 2,269 mm
- Revolutions per km
- 441
Values are calculated from the size. Real tyres differ by a few millimetres between brands.
Cars using 315/30R21
| Car | Axle | Versions |
|---|---|---|
| Porsche 911 | Rear only | 2 |
| Porsche 911 GT3 | Rear only | 1 |
| Porsche Panamera | Rear only | 2 |
Sizes that can replace 315/30R21
This is a calculation, not a factory approval. The list shows sizes whose overall diameter is within ±3%. Check your door label, certificate of conformity (CoC) or tyre shop before fitting.
305/35R20−0.1%
325/25R22−0.2%
335/25R22+0.5%
305/30R21−0.8%325/30R21+0.8%315/35R20+0.8%315/25R22−0.8%
345/30R20−1.0%
295/35R20−1.1%345/25R22+1.2%