CINTURATO P7™ (P7C2) is the latest Pirelli Summer high-performance tyre for premium cars and Crossovers with a strong focus on wet performances, mileage and rolling resistance. These features are perfectly balanced, making the new Cinturato the first choice for the best car manufacturers. The new tread pattern design and profile, in addition 215/55-R17 tires are 0.18 inches (4.6 mm) smaller in diameter than 205/65-R16 tires and the speedometer difference is 0.7%. 235/55-R16 tires are 0.02 inches (0.5 mm) larger in diameter than 215/60-R16 tires and the speedometer difference is 0.1%. 205-55r16, 215-60r16 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. Tire Size and Comparison Calculator calculate tire diameter from code and compare speedometer differences for tire sizes. The first number 225 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 225/60 R 16 tire is 60% of 225 = 192. In the tire comparison table above, you can see a detailed calculation of the size difference between 205/55 R16 and 215/55 R17 tire. The calculation results are presented in the form of visual infographics, on which tire with size 205/55 R16 is on top, and tire with size 215/55 R17 below. Both in the table and in the graph, the tires are On top of that, given the fact that 205/60r16 is the original equipment tire size, you may also emulate the difference between your actual speed and speedometer readings after installing the 195/55r16 tires. Chances are high that you will want to calibrate your speedometer! Other sizes often compared: 195/55r16 vs 235/50r16; 205/60r16 vs 215/50r17 215/55R16 VS. 215/55ZR16. For those who don't know major work has been recently to the ride. Front suspension all major wear parts are replaced, as well as all 4 rotor and brakes, changed. I replaced the rear passenger tire a few weeks to a month ago because of uneven wear. The first number 215 is the tire width in millimeters. The 2nd number 55 is used to calculate the sidewall height or "aspect ratio", by percentage. So, the sidewall height of a 215/55 R 16 tire is 60% of 215 = 192. The 3rd number 16 (generally preceded by an "R") is Rim Diameter in inches. This is the diameter of the rims bead seat base, not Tire Size and Comparison Calculator calculate tire diameter from code and compare speedometer differences for tire sizes. The first number 185 is the tire width in millimeters. The 2nd number 55 is used to calculate the sidewall height or "aspect ratio", by percentage. So, the sidewall height of a 185/55 R 16 tire is 60% of 185 = 192. 8L8HAi.