215/70-R16 tires are 0.45 inches (11.4 mm) smaller in diameter than 205/70-R17 tires and the speedometer difference is 1.6%. 205/65-R16 tires are 0.67 inches (16.9 mm) smaller in diameter than 215/60-R17 tires and the speedometer difference is 2.5%. Compare 205/55 R16 vs 205/55 R17 Tire Size and Comparison Calculator calculate tire diameter from code and compare speedometer differences for tire sizes. The first number 205 is the tire width in millimeters. 215/45-R16 tires are 0.45 inches (11.5 mm) smaller in diameter than 205/50-R16 tires and the speedometer difference is 1.9%. 205/55-R17 tires are 0.41 inches (10.5 mm) larger in diameter than 215/50-R17 tires and the speedometer difference is 1.6%. 205/55-R16 tires are 0.41 inches (10.5 mm) larger in diameter than 215/50-R16 tires and the speedometer difference is 1.7%. 215/60-R16 tires are 0.33 inches (8.5 mm) smaller in diameter than 205/65-R16 tires and the speedometer difference is 1.3%. TaLG.

205 50 r17 vs 205 60 r16