245/40-R17 tires are 1.52 inches (38.5 mm) larger in diameter than 225/35-R17 tires and the speedometer difference is 6.1% 225/45-R18 tires are 3.57 inches (90.6 mm) smaller in diameter than 245/65-R17 tires and the speedometer difference is 12.1% In the tire comparison table above, you can see a detailed calculation of the size difference between 235/45 R17 and 245/40 R17 tire. The calculation results are presented in the form of visual infographics, on which tire with size 235/45 R17 is on top, and tire with size 245/40 R17 below. Both in the table and in the graph, the tires are 225/45 r17 225/50 r17 235/40 r18 245/45 r18 215/45 r17 225/45 r18 245/40 r17 245/40 r20 245/50 r18 265/65 r18 295/35 r21 165/50 r15 205/50 r15 The first number 225 is the tire width in millimeters. The 2nd number 55 is used to calculate the sidewall height or "aspect ratio", by percentage. So, the sidewall height of a 225/55 R 17 tire is 60% of 225 = 192. The 3rd number 17 (generally preceded by an "R") is Rim Diameter in inches. In the tire comparison table above, you can see a detailed calculation of the size difference between 215/45 R17 and 235/45 R17 tire. The calculation results are presented in the form of visual infographics, on which tire with size 215/45 R17 is on top, and tire with size 235/45 R17 below. Both in the table and in the graph, the tires are Helpful 19 - tyre reviewed on August 16, 2018. Given 69% while driving a Mercedes Benz A180 CDI W176 (225/45 R17) on a combination of roads for 9,000 spirited miles. Nokian Zline does everything the way it should. Water, grip, fuel and handling is really good. RVPcok.

245 40 r17 vs 225 45 r17