Tyre size calculator

Equivalent sizes for the 285/60 R18 tyre

Sidewall height 171 mmDiameter 799 mm Circumference 2511 mmRevolutions/km 398

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
275/65 R17	-1.24 %	98.8 km/h	—	3 models in stockFrom CHF 175.00 Summer1 All-season2
265/70 R17	+0.48 %	100.5 km/h	—	3 models in stockFrom CHF 150.00 All-season3

Size	Difference	Actual speed at 100 km/h on the speedometer	ETRTO rims	Tyres in stock
275/60 R18	-1.49 %	98.5 km/h	—	1 model in stockFrom CHF 167.00 All-season1
285/60 R18 Your size	0 %	100.0 km/h	—	3 models in stockFrom CHF 152.00 Summer1 Winter1 All-season1
265/65 R18	+0.32 %	100.3 km/h	—	4 models in stockFrom CHF 172.00 Winter2 All-season2

Size	Difference	Actual speed at 100 km/h on the speedometer	ETRTO rims	Tyres in stock
275/55 R19	-1.75 %	98.3 km/h	—	6 models in stockFrom CHF 186.00 Summer1 Winter4 All-season1

Size	Difference	Actual speed at 100 km/h on the speedometer	ETRTO rims	Tyres in stock
255/55 R20	-1.34 %	98.7 km/h	—	23 models in stockFrom CHF 164.00 Summer5 Winter9 All-season9
285/50 R20	-0.76 %	99.2 km/h	9" – 8" – 8,5" – 9,5" – 10"	3 models in stockFrom CHF 190.00 Summer2 All-season1
275/55 R20	+1.43 %	101.4 km/h	—	5 models in stockFrom CHF 104.00 Summer2 Winter1 All-season2

Size	Difference	Actual speed at 100 km/h on the speedometer	ETRTO rims	Tyres in stock
295/40 R22	-0.54 %	99.5 km/h	10,5" – 10" – 11" – 11,5"	2 models in stockFrom CHF 251.00 Summer1 Winter1
305/40 R22	+0.48 %	100.5 km/h	11" – 10" – 10,5" – 11,5" – 12"	1 model in stockFrom CHF 370.00 Summer1

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