Which cars use 315/40R21 tyres?
315/40R21 is a factory tyre size on 2 car models in our data. Its overall diameter is about 785.4 mm.
Size details
- Overall diameter
- 785.4 mm
- Section width
- 315 mm
- Sidewall height
- 126.0 mm
- Rim diameter
- 21″
- Rolling circumference
- 2,467 mm
- Revolutions per km
- 405
Values are calculated from the size. Real tyres differ by a few millimetres between brands.
Cars using 315/40R21
| Car | Axle | Versions |
|---|---|---|
| Porsche Cayenne | Rear only | 1 |
| Porsche Cayenne Coupé | Rear only | 1 |
Sizes that can replace 315/40R21
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.
335/30R23−0.0%
325/35R22+0.1%
345/40R20−0.2%
305/45R20−0.4%
295/35R23+0.7%
345/30R23+0.7%
315/45R20+0.8%
315/35R22−0.8%325/30R23−0.8%
335/35R22+1.0%