Tyre size calculator

Equivalent sizes for the 155/80 R15 tyre

Sidewall height 124 mmDiameter 629 mm Circumference 1976 mmRevolutions/km 506

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.

Tyre size equivalents

14″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
175/75 R14 -1.74 % 98.3 km/h — —
165/80 R14 -1.49 % 98.5 km/h — —
185/75 R14 +0.69 % 100.7 km/h —
175/80 R14 +1.05 % 101.1 km/h —

15″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
185/65 R15 -1.17 % 98.8 km/h —
155/80 R15 Your size 0 % 100.0 km/h — —
185/70 R15 +1.78 % 101.8 km/h —

16″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
175/60 R16 -1.98 % 98.0 km/h —
185/60 R16 -0.08 % 99.9 km/h —

17″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
175/55 R17 -0.73 % 99.3 km/h — —

Sizes equivalent to 155/80 R15:

175/75 R14165/80 R14185/75 R14175/80 R14185/65 R15185/70 R15175/60 R16185/60 R16175/55 R17

This information is provided for guidance only and does not engage Rupteur's liability in any way.