Tyre size calculator
Equivalent sizes for the 285/40 R21 tyre
Sidewall height 114 mmDiameter 761 mm Circumference 2392 mmRevolutions/km 418
Approved rim widths according to ETRTO: 10" – 9,5" – 10,5" – 11"
To be approved, a tyre's diameter may differ by no more than 2 %. The vehicle's load and speed indices must also be respected.
20″
| Size | Difference | Actual speed at 100 km/h on the speedometer | ETRTO rims | Tyres in stock |
|---|---|---|---|---|
| 265/45 R20 | -1.97 % | 98.0 km/h | 9" – 8,5" – 9,5" – 10" | |
| 275/45 R20 | -0.80 % | 99.2 km/h | 9" – 8,5" – 9,5" – 10" – 10,5" | |
| 255/50 R20 | +0.20 % | 100.2 km/h | 8" – 7" – 7,5" – 8,5" – 9" | |
| 285/45 R20 | +0.40 % | 100.4 km/h | 9,5" – 9" – 10" – 10,5" | |
| 265/50 R20 | +1.50 % | 101.5 km/h | 8,5" – 7,5" – 8" – 9" – 9,5" | |
| 295/45 R20 | +1.57 % | 101.6 km/h | 10" – 9,5" – 10,5" – 11" |
21″
| Size | Difference | Actual speed at 100 km/h on the speedometer | ETRTO rims | Tyres in stock |
|---|---|---|---|---|
| 285/40 R21 Your size | 0 % | 100.0 km/h | 10" – 9,5" – 10,5" – 11" | |
| 295/40 R21 | +1.03 % | 101.0 km/h | 10,5" – 10" – 11" – 11,5" | |
| 265/45 R21 | +1.37 % | 101.4 km/h | 9" – 8,5" – 9,5" – 10" |
22″
| Size | Difference | Actual speed at 100 km/h on the speedometer | ETRTO rims | Tyres in stock |
|---|---|---|---|---|
| 275/35 R22 | -1.33 % | 98.7 km/h | 9,5" – 9" – 10" – 10,5" – 11" | |
| 285/35 R22 | -0.43 % | 99.6 km/h | 10" – 9,5" – 10,5" – 11" | |
| 265/40 R22 | +1.23 % | 101.2 km/h | 9,5" – 9" – 10" – 10,5" |
Sizes equivalent to 285/40 R21:
265/45 R20275/45 R20255/50 R20285/45 R20265/50 R20295/45 R20295/40 R21265/45 R21275/35 R22285/35 R22265/40 R22
285/40 R21 tyres in stock
View all 15 285/40 R21 tyres ›This information is provided for guidance only and does not engage Rupteur's liability in any way.
