225/65-R17 tires are 2.66 inches (67.5 mm) larger in diameter than 225/50-R17 tires and the speedometer difference is 9.3%.
235/60-R17 tires are 0.16 inches (4 mm) smaller in diameter than 220/65-R17 tires and the speedometer difference is 0.5%.
215/45 R18 vs 225/50 R17; 235/65 R17 vs 245/60 R18; 215/60 R17 vs 225/60 R17; 235/50 R22 vs 265/70 R17; 225/50 R17 vs 225/65 R17; 195/45 R17 vs 205/45 R17;
5395. Better Fuel Economy Factory Ratios Increased Power. vs 245/70-17 vs 265/65-17 vs 225/65-17 vs 245/75-17 vs 255/65-17 vs 255/70-17. 235/65-R17 tires are 0.51 inches (13 mm) smaller in diameter than 245/65-R17 tires and the speedometer difference is 1.8%.
235/60-R17 tires are 0.93 inches (23.5 mm) smaller in diameter than 235/65-R17 tires and the speedometer difference is 3.2%.
The 2nd number 65 is used to calculate the sidewall height or "aspect ratio", by percentage. So, the sidewall height of a 225/65 R 17 tire is 60% of 225 = 192. The 3rd number 17 (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.
yjUP. 93 484 186 207 219 455 210 114 254
235 65 r17 vs 225 65 r17
