Tyre size calculator

Equivalent sizes for the 255/45 R19 tyre

Sidewall height 115 mmDiameter 712 mm Circumference 2237 mmRevolutions/km 447

Approved rim widths according to ETRTO: 8,5" – 8" – 9" – 9,5"

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

18″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
245/50 R18 -1.39 % 98.6 km/h 7,5" – 7" – 8" – 8,5"
275/45 R18 -1.07 % 98.9 km/h 9" – 8,5" – 9,5" – 10" – 10,5"
225/55 R18 -1.07 % 98.9 km/h —
235/55 R18 +0.50 % 100.5 km/h —

19″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
275/40 R19 -1.36 % 98.6 km/h 9,5" – 9" – 10" – 10,5" – 11"
245/45 R19 -1.28 % 98.7 km/h 8" – 7,5" – 8,5" – 9"
285/40 R19 -0.21 % 99.8 km/h 10" – 9,5" – 10,5" – 11"
255/45 R19 Your size 0 % 100.0 km/h 8,5" – 8" – 9" – 9,5"
235/50 R19 +0.75 % 100.8 km/h 7,5" – 6,5" – 7" – 8" – 8,5"
265/45 R19 +1.25 % 101.3 km/h 9" – 8,5" – 9,5" – 10"

20″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
275/35 R20 -1.64 % 98.4 km/h 9,5" – 9" – 10" – 10,5" – 11"
245/40 R20 -1.14 % 98.9 km/h 8,5" – 8" – 9" – 9,5"
285/35 R20 -0.68 % 99.3 km/h 10" – 9,5" – 10,5" – 11"
255/40 R20 -0.04 % 100.0 km/h 9" – 8,5" – 9,5" – 10"
235/45 R20 +1.03 % 101.0 km/h 8" – 7,5" – 8,5" – 9"
265/40 R20 +1.11 % 101.1 km/h 9,5" – 9" – 10" – 10,5"

21″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
255/35 R21 -0.04 % 100.0 km/h 9" – 8,5" – 9,5" – 10"
265/35 R21 +0.93 % 100.9 km/h 9,5" – 9" – 10" – 10,5"

22″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
235/30 R22 -1.75 % 98.3 km/h 8,5" —
285/25 R22 -1.53 % 98.5 km/h 10,5" —
245/30 R22 -0.89 % 99.1 km/h 8,5" – 8" – 9" —
255/30 R22 -0.07 % 99.9 km/h 9" – 8,5" – 9,5" —
265/30 R22 +0.78 % 100.8 km/h 9,5" – 9" – 10"

Sizes equivalent to 255/45 R19:

245/50 R18275/45 R18225/55 R18235/55 R18275/40 R19245/45 R19285/40 R19235/50 R19265/45 R19275/35 R20245/40 R20285/35 R20255/40 R20235/45 R20265/40 R20255/35 R21265/35 R21235/30 R22285/25 R22245/30 R22255/30 R22265/30 R22

255/45 R19 tyres in stock

View all 31 255/45 R19 tyres ›

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