Tyre size calculator

Equivalent sizes for the 245/40 R20 tyre

Sidewall height 98 mmDiameter 704 mm Circumference 2212 mmRevolutions/km 452

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

19″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
235/45 R19 -1.41 % 98.6 km/h 8" – 7,5" – 8,5" – 9"
265/40 R19 -1.33 % 98.7 km/h 9,5" – 9" – 10" – 10,5"
275/40 R19 -0.22 % 99.8 km/h 9,5" – 9" – 10" – 10,5" – 11"
245/45 R19 -0.14 % 99.9 km/h 8" – 7,5" – 8,5" – 9"
255/45 R19 +1.15 % 101.2 km/h 8,5" – 8" – 9" – 9,5"
235/50 R19 +1.91 % 101.9 km/h 7,5" – 6,5" – 7" – 8" – 8,5"

20″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
265/35 R20 -1.52 % 98.5 km/h 9,5" – 9" – 10" – 10,5"
275/35 R20 -0.51 % 99.5 km/h 9,5" – 9" – 10" – 10,5" – 11"
215/45 R20 -0.36 % 99.6 km/h 7" – 7,5" – 8"
245/40 R20 Your size 0 % 100.0 km/h 8,5" – 8" – 9" – 9,5"
255/40 R20 +1.12 % 101.1 km/h 9" – 8,5" – 9,5" – 10"

21″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
265/30 R21 -1.66 % 98.3 km/h 9,5" – 9" – 10" —
255/35 R21 +1.12 % 101.1 km/h 9" – 8,5" – 9,5" – 10"

22″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
235/30 R22 -0.61 % 99.4 km/h 8,5" —
245/30 R22 +0.25 % 100.3 km/h 8,5" – 8" – 9" —
255/30 R22 +1.08 % 101.1 km/h 9" – 8,5" – 9,5" —
265/30 R22 +1.95 % 102.0 km/h 9,5" – 9" – 10"

Sizes equivalent to 245/40 R20:

235/45 R19265/40 R19275/40 R19245/45 R19255/45 R19235/50 R19265/35 R20275/35 R20215/45 R20255/40 R20265/30 R21255/35 R21235/30 R22245/30 R22255/30 R22265/30 R22

245/40 R20 tyres in stock

View all 39 245/40 R20 tyres ›

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