22545-R17 tires are 0.06 inches (1.5 mm) smaller in diameter than 255/40-R17 tires and the speedometer difference is 0.3%. Inthe tire comparison table above, you can see a detailed calculation of the size difference between 205/45 R17 and 215/40 R17 tire. The calculation results are presented in the form of visual infographics, on which tire with size 205/45 R17 is on top, and tire with size 215/40 R17 below. Both in the table and in the graph, the tires are Thisis because it will take a little longer to deform the tire and have it load up. I ran 245s on an 8in wide wheel and compared with a 215 or 225 on the same wheel I did notice a difference. Not all 225s are the same. Check out the section with and tread width when comparing between different brands/tires. TireSize and Comparison Calculator calculate tire diameter from code and compare speedometer differences for tire sizes. The first number 235 is the tire width in millimeters. The 2nd number 50 is used to calculate the sidewall height or "aspect ratio", by percentage. So, the sidewall height of a 235/50 R 17 tire is 60% of 235 = 192.
Thecalculation results are presented in the form of visual infographics, on which tire with size 215/50 R17 is on top, and tire with size 225/50 R17 below. Both in the table and in the graph, the tires are compared according to the following indicators: overall diameter, section width, circumference, sidewall height and clearance.

Also the speedo difference to 215/45-17 is 1.6%, BUT the car comes stock with 16'' and 205/55/-16 and compared to those, difference is 0.4%. Negligible, either way. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood. Theodore Roosevelt. Save.

Sizedifference between 225/50 R17 and 215/45 R17 tires. In the tire comparison table above, you can see a detailed calculation of the size difference between 225/50 R17 and 215/45 R17 tire. The calculation results are presented in the form of visual infographics, on which tire with size 225/50 R17 is on top, and tire with size 215/45 R17 below.
MichelinPS4: 215 vs 225 for 17x8 wheel Wheels | Tires | Spacers | Hub difference between 215/45/R17 & 225/45/R17 circumference/speed variance is 1.55%, not that drastic, within "safe change range". IIRC not the case with MPS4, but for some tire models 225/45/R17 was cheaper then 215, due 225 being more common sizing. TireSize Calculator - Tire & Wheel Plus Sizing. BETA. 215-45R17 tire size comparison with Size calculator. Use our tire calculator to compare tire sizes based on tire diameter, radius, sidewall height, circumference, revs Satl4wC.
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    • 215 40 r17 vs 225 45r17