235/65-R16 tires are 0.18 inches (4.5 mm) larger in diameter than 215/70-R16 tires and the speedometer difference is 0.6%. In the tire comparison table above, you can see a detailed calculation of the size difference between 235/60 R16 and 225/60 R16 tire. The calculation results are presented in the form of visual infographics, on which tire with size 235/60 R16 is on top, and tire with size 225/60 R16 below. Both in the table and in the graph, the tires are Tire size comparison in inches 215/60 R16 vs 205/60 R16 Calculate CM INCHES If your speedometer reads: Real speed is: Size difference between 215/60 R16 and 205/60 R16 tires. In the tire comparison table above, you can see a detailed calculation of the size difference between 215/60 R16 and 205/60 R16 tire. Aug 30, 2021 · With the same wheel, you can usually go one size larger in both the aspect ratio and tire (not wheel, so 205 to 215) diameter with no ill effects and perhaps some improvement (going up one size in to 215 and keeping the same aspect ratio increases treat width). Conversion Sizes; 60 Series 45 Series 40 Series; 195/60 R14: 205/45 R16 215/45 R16 : 205/60 R14: 215/45 R16 225/45 R16 : 215/60 R14: 225/45 R16 : 225/45 R14: 245/45 R16 225/60-R16 tires are 1.77 inches (45 mm) larger in diameter than 225/50-R16 tires and the speedometer difference is 6.7%. 205/60-R16 tires are 0.37 inches (9.5 mm) larger in diameter than 215/55-R16 tires and the speedometer difference is 1.5%. Tirerack.com shows an optional 16" tire size of 205/55-16, but not 205/60-16. The wider tire (205 refers to the width, in mm) will likely use a bit more fuel, though you may never notice. A 205/60-16 is larger in diameter than your tires, so the speedo would also be off (it would read a bit slow). Compare 205/60 R16 vs 205/65 R15. 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. The 2nd number 60 is used to calculate the sidewall height or "aspect ratio", by percentage. So, the sidewall height of a 205/60 R 16 215/45-18 205/60-16 Difference; Diameter inches (mm) 25.62 (650.7) 25.69 (652.4) 0.07 (1.7) 0.3%: Width inches (mm) 8.46 (215) 8.07 (205)-0.39 (-10) -4.7%: Circum. inches (mm) 80.48 (2044.23) 80.69 (2049.58) 0.21 (5.34) 0.3%: Sidewall Height inches (mm) 3.81 (96.75) 4.84 (123) 1.03 (26.25) 27.1%: Revolutions per mile (km) 787.26 (489.18) 785.21 UPe8E.