Tyre size calculator

Equivalent sizes for the 285/50 R20 tyre

Sidewall height 143 mmDiameter 793 mm Circumference 2491 mmRevolutions/km 401

Approved rim widths according to ETRTO: 9" – 8" – 8,5" – 9,5" – 10"

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.

Size	Difference	Actual speed at 100 km/h on the speedometer	ETRTO rims	Tyres in stock
275/55 R19	-0.99 %	99.0 km/h	—	6 models in stockFrom CHF 111.00 Summer2 Winter4

Size	Difference	Actual speed at 100 km/h on the speedometer	ETRTO rims	Tyres in stock
275/50 R20	-1.25 %	98.8 km/h	8,5" – 7,5" – 8" – 9" – 9,5"	14 models in stockFrom CHF 207.00 Summer3 Winter10 All-season1
255/55 R20	-0.58 %	99.4 km/h	—	26 models in stockFrom CHF 98.90 Summer5 Winter12 All-season9
285/50 R20 Your size	0 %	100.0 km/h	9" – 8" – 8,5" – 9,5" – 10"	3 models in stockFrom CHF 190.00 Summer2 All-season1

Size	Difference	Actual speed at 100 km/h on the speedometer	ETRTO rims	Tyres in stock
275/45 R21	-1.54 %	98.5 km/h	9" – 8,5" – 9,5" – 10" – 10,5"	31 models in stockFrom CHF 102.00 Summer8 Winter16 All-season7

Size	Difference	Actual speed at 100 km/h on the speedometer	ETRTO rims	Tyres in stock
275/40 R22	-1.79 %	98.2 km/h	9,5" – 9" – 10" – 10,5" – 11"	18 models in stockFrom CHF 205.00 Summer9 Winter7 All-season2
295/40 R22	+0.22 %	100.2 km/h	10,5" – 10" – 11" – 11,5"	3 models in stockFrom CHF 251.00 Summer1 Winter2
305/40 R22	+1.25 %	101.3 km/h	11" – 10" – 10,5" – 11,5" – 12"	2 models in stockFrom CHF 370.00 Summer1 Winter1