Aug 12, 2020 · 225/65-17 or 225/60-18 would be just fine as well, but I wanted to fit the tallest tire I could without lifting it. I don't really have any driving impressions vs stock as these tires went on immediately, second day home from the dealer. But I have no complaints, off road traction was great and looking forward to testing in the snow soon.
May 10, 2023 · Given 65% while driving a BMW 320i (225/50 R17 V) on a combination of roads for 2,200 average miles 2016 BMW 320i 225/50/17 2014 VW GOLF 205/55/16 After the initial minutes of euphoria having the latest Michelin's on both of our cars I am now more doubtful about these tires.
The first number 225 is the tire width in millimeters. The 2nd number 45 is used to calculate the sidewall height or "aspect ratio", by percentage. So, the sidewall height of a 225/45 R 18 tire is 60% of 225 = 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 205/70-R15 tires are 2.22 inches (56.3 mm) smaller in diameter than 225/65-R17 tires and the speedometer difference is 7.8%.