Tyre size calculator

Equivalent sizes for the 215/45 R18 tyre

Sidewall height 97 mmDiameter 651 mm Circumference 2044 mmRevolutions/km 489

Approved rim widths according to ETRTO: 7" – 7,5" – 8"

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

17″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
235/45 R17 -1.13 % 98.9 km/h 8" – 7,5" – 8,5" – 9"
195/55 R17 -0.70 % 99.3 km/h —
215/50 R17 -0.62 % 99.4 km/h 7" – 6" – 6,5" – 7,5"
245/45 R17 +0.23 % 100.2 km/h 8" – 7,5" – 8,5" – 9"
225/50 R17 +0.94 % 100.9 km/h 7" – 6" – 6,5" – 7,5" – 8"
205/55 R17 +1.01 % 101.0 km/h —

18″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
205/45 R18 -1.41 % 98.6 km/h 7" – 6,5" – 7,5"
235/40 R18 -0.86 % 99.1 km/h 8,5" – 8" – 9" – 9,5"
215/45 R18 Your size 0 % 100.0 km/h 7" – 7,5" – 8"
245/40 R18 +0.39 % 100.4 km/h 8,5" – 8" – 9" – 9,5"
225/45 R18 +1.37 % 101.4 km/h 7,5" – 7" – 8" – 8,5"

19″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
225/35 R19 -1.64 % 98.4 km/h 8" – 7,5" – 8,5" – 9"
235/35 R19 -0.55 % 99.5 km/h 8,5" – 8" – 9" – 9,5"
245/35 R19 +0.51 % 100.5 km/h 8,5" – 8" – 9" – 9,5"
225/40 R19 +1.83 % 101.8 km/h 8" – 7,5" – 8,5" – 9"

20″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
225/30 R20 -1.21 % 98.8 km/h 8" —
235/30 R20 -0.27 % 99.7 km/h 8,5"
245/30 R20 +0.66 % 100.7 km/h 8,5" – 8" – 9"

Sizes equivalent to 215/45 R18:

235/45 R17195/55 R17215/50 R17245/45 R17225/50 R17205/55 R17205/45 R18235/40 R18245/40 R18225/45 R18225/35 R19235/35 R19245/35 R19225/40 R19225/30 R20235/30 R20245/30 R20

215/45 R18 tyres in stock

View all 30 215/45 R18 tyres ›

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