Inthe tire comparison table above, you can see a detailed calculation of the size difference between 225/65 R17 and 245/60 R18 tire. The calculation results are presented in the form of visual infographics, on which tire with size 225/65 R17 is on top, and tire with size 245/60 R18 below. Both in the table and in the graph, the tires are Thecalculation results are presented in the form of visual infographics, on which tire with size 225/60 R17 is on top, and tire with size 225/55 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. Wildpeaks225/60/18 VS stock Falkens 225/55/18. Related Topics Subaru Forester Subaru Subaru Cars and Motor Vehicles comments sorted by Best Top New Controversial Q&A Add a Comment. ATV360 • Additional comment actions 215/45/r18 vs 225/45/r18. r/SubaruForester Thecalculation results are presented in the form of visual infographics, on which tire with size 215/55 R18 is on top, and tire with size 225/60 R16 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. 22565-R18 tires are 1.77 inches (45 mm) larger in diameter than 225/55-R18 tires and the speedometer difference is 6.0%. Tire1 / R 225 55 R 18 Tire 2 / R 235 50 R 18 Inch Mill KPH MPH Odometer Reading If you replace 320/60/18 with 235/60/18 for Odometer reading 1000 the actual distance traveled Delivered £205.95. Visit Shop >>. 225/60 R18 104V. Fully Fitted. £209.56. Visit Shop >>. Compare the best price for the 225/60 R18 Continental WinterContact TS 870 P. Find The2nd number 60 is used to calculate the sidewall height or "aspect ratio", by percentage. So, the sidewall height of a 245/60 R 18 tire is 60% of 245 = 192. The 3rd number 18 (generally preceded by an "R") is Rim Diameter in inches. This is the diameter of the rims bead seat base, not the diameter of the outer rim edge. 1hnKk.