Tyre size calculator
Equivalent sizes for the 155/80 R12 tyre
Sidewall height 124 mmDiameter 553 mm Circumference 1737 mmRevolutions/km 576
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 |
|---|---|---|---|---|
| 155/80 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 |
|---|---|---|---|---|
| 165/65 R13 | -1.47 % | 98.5 km/h | — | |
| 135/80 R13 | -1.19 % | 98.8 km/h | — | — |
| 155/70 R13 | -1.01 % | 99.0 km/h | — | |
| 185/60 R13 | -0.09 % | 99.9 km/h | — | — |
| 175/65 R13 | +0.92 % | 100.9 km/h | — | |
| 165/70 R13 | +1.52 % | 101.5 km/h | — | |
| 145/80 R13 | +1.70 % | 101.7 km/h | — |
14″
| Size | Difference | Actual speed at 100 km/h on the speedometer | ETRTO rims | Tyres in stock |
|---|---|---|---|---|
| 165/60 R14 | +0.18 % | 100.2 km/h | — | |
| 155/65 R14 | +0.78 % | 100.8 km/h | — | |
| 185/55 R14 | +1.15 % | 101.2 km/h | — |
15″
| Size | Difference | Actual speed at 100 km/h on the speedometer | ETRTO rims | Tyres in stock |
|---|---|---|---|---|
| 175/50 R15 | +0.60 % | 100.6 km/h | 5,5" – 5" – 6" | — |
| 165/55 R15 | +1.79 % | 101.8 km/h | — | — |
Sizes equivalent to 155/80 R12:
165/65 R13135/80 R13155/70 R13185/60 R13175/65 R13165/70 R13145/80 R13165/60 R14155/65 R14185/55 R14175/50 R15165/55 R15
This information is provided for guidance only and does not engage Rupteur's liability in any way.