Brought a set of alloys wheels + TS850P (225/40 R18)s for winter use. Swapped out ContiSportContact 5Ps (230/35 R19)s which are great but stop working at temperatures lower than 10degC. These are really confidence inspiring on the ungritted roads that I have to transit every morning and evening.225/55-R18 tires are 1 inch (25.4 mm) larger in diameter than 225/55-R17 tires and the speedometer difference is 3.6%
225/50-R17 tires are 1 inch (25.4 mm) smaller in diameter than 225/50-R18 tires and the speedometer difference is 3.7%.
The calculation results are presented in the form of visual infographics, on which tire with size 225/50 R18 is on top, and tire with size 235/45 R18 below. Both in the table and in the graph, the tires are compared according to the following indicators: overall diameter, section width, circumference, sidewall height and clearance.
Sep 13, 2019 · 1st: 2019 SUV 4x4 Summer Tyre Test (225/55 R17) 1st: Goodyear Eagle F1 Asymmetric 5 VS Asymmetric 3 VS Continental PremiumContact 6 - In depth test (225/40 R18) 1st: Goodyear Eagle F1 Asymmetric 5 vs SuperSport vs SuperSport R (235/35 R19) 2nd: 2019 Gute Fahrt Summer 18 Inch Tyre Test (225/40 R18) 2nd: 2019 Auto Bild Summer Tyre Test (225/45 R17).