May 9, 2016 · From the time I bought my R53 in 2003, I have always just run the stock tire size, but I'm curious about the benefits/drawbacks of going to a 215/45-R17 size. When comparing the specs of the two tires sizes, obviously the 215/45-R17s are going to be slightly larger. Diameter 205/45-R17: 24.26" 215/45-R17: 24.62" Section Width 205/45-R17: 8.07" Late to this question, but its possible to switch from 225/45R17 to 225/50R17. The 45-50 number is the aspect ratio of the tire, bigger the number the larger the sidewall. Though in this case, the difference is small, around an inch, but still affects final drive ratio as other have mentioned. At low speeds probably off by 1mph and difference The main technical difference between 225 vs 245 tires is the width. There is a 20 mm difference in width between the two tires. The 225 tire is relatively narrower than the 245. So the 245 wheel has a larger contact patch than the 225. These two types of tires are produced in different aspect ratios and rim diameters. Tire Size Calculator - Tire & Wheel Plus Sizing. BETA. -3.43% too slow. -3.43% too slow. 225-45R17, 225-50R17 tire size comparison with 1010tires.com Tire Size calculator. Use our tire calculator to compare tire sizes based on tire diameter, radius, sidewall height, circumference, revs per mile and speedometer difference. 245/45-R17 tires are 0.05 inches (1.3 mm) larger in diameter than 225/60-R15 tires and the speedometer difference is 0.2%. 225/55-R16 tires are 0.06 inches (1.6 mm) larger in diameter than 245/45-R17 tires and the speedometer difference is 0.2% In the tire comparison table above, you can see a detailed calculation of the size difference between 235/45 R17 and 245/65 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 245/65 R17 below. Both in the table and in the graph, the tires are vOkl.

225 50 r17 vs 245 45r17