Tyre size calculator
Equivalent sizes for the 145/80 R12 tyre
Sidewall height 116 mmDiameter 537 mm Circumference 1686 mmRevolutions/km 593
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.
12″
| Size | Difference | Actual speed at 100 km/h on the speedometer | ETRTO rims | Tyres in stock |
|---|---|---|---|---|
| 165/70 R12 | -0.19 % | 99.8 km/h | — | — |
| 145/80 R12 Your size | 0 % | 100.0 km/h | — | — |
13″
| Size | Difference | Actual speed at 100 km/h on the speedometer | ETRTO rims | Tyres in stock |
|---|---|---|---|---|
| 155/65 R13 | -0.95 % | 99.1 km/h | — | |
| 145/70 R13 | -0.66 % | 99.3 km/h | — | |
| 175/60 R13 | +0.66 % | 100.7 km/h | — | — |
| 165/65 R13 | +1.47 % | 101.5 km/h | — | |
| 135/80 R13 | +1.75 % | 101.8 km/h | — | — |
| 155/70 R13 | +1.94 % | 101.9 km/h | — |
Sizes equivalent to 145/80 R12:
165/70 R12155/65 R13145/70 R13175/60 R13165/65 R13135/80 R13155/70 R13
This information is provided for guidance only and does not engage Rupteur's liability in any way.