Which cars use 255/45R21 tyres?
255/45R21 is a factory tyre size on 1 car models in our data. Its overall diameter is about 762.9 mm.
Size details
- Overall diameter
- 762.9 mm
- Section width
- 255 mm
- Sidewall height
- 114.8 mm
- Rim diameter
- 21″
- Rolling circumference
- 2,397 mm
- Revolutions per km
- 417
Values are calculated from the size. Real tyres differ by a few millimetres between brands.
Cars using 255/45R21
| Car | Axle | Versions |
|---|---|---|
| Audi Q6 e-tron | Front only | 1 |
Sizes that can replace 255/45R21
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.
255/50R20+0.0%
255/40R22−0.0%
255/35R23−0.0%
285/40R21−0.2%285/45R20+0.2%235/55R20+0.5%
285/35R22−0.6%235/50R21+0.7%
265/35R23+0.9%
245/35R23−0.9%