In the tire comparison table above, you can see a detailed calculation of the size difference between 225/65 R17 and 225/55 R17 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 225/55 R17 below. Both in the table and in the graph, the tires are 235/65-R17 tires are 1 inch (25.4 mm) smaller in diameter than 235/65-R18 tires and the speedometer difference is 3.4%. 225/65-R17 tires are 0.67 inches (16.9 mm) larger in diameter than 215/70-R16 tires and the speedometer difference is 2.3%. 235/55-R18 tires are 0.85 inches (21.6 mm) smaller in diameter than 235/65-R17 tires and the speedometer difference is 3.0%. In the tire comparison table above, you can see a detailed calculation of the size difference between 225/65 R17 and 245/65 R17 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 245/65 R17 below. Both in the table and in the graph, the tires are Tire size comparison in inches 235/55 R17 vs 225/65 R17 Calculate CM INCHES If your speedometer reads: Real speed is: Size difference between 235/55 R17 and 225/65 R17 tires. In the tire comparison table above, you can see a detailed calculation of the size difference between 235/55 R17 and 225/65 R17 tire. 225/50-R17 tires are 2.15 inches (54.5 mm) smaller in diameter than 215/65-R17 tires and the speedometer difference is 7.7%. Apr 22, 2019 · It came down to two really, either a 225/65 R17 or a 235/60 R17. I hit up a wheel offset visualizer to see the difference of various combinations. Indeed I think the 235/65 setup would work but it was pushing things very tight. In the tire comparison table above, you can see a detailed calculation of the size difference between 255/65 R17 and 255/70 R17 tire. The calculation results are presented in the form of visual infographics, on which tire with size 255/65 R17 is on top, and tire with size 255/70 R17 below. Both in the table and in the graph, the tires are wW56lN.