The225/45R17 91Y tyre has the following features: the first three digits 225 refer to the width of the tyre in millimetres. The second two-digit number 45 refers to the ratio between the height of the sidewall and the width of the tyre. R stands for “Radial” and the last two figures 17 indicate the wheel diameter in inches. Hereis a pic with 17" wheels and 225/45/17 tires. Gas Mileage - 1-2 mpg better with the 205's. Acceleration - No noticable difference. Top Speed - No noticable difference. Grip - My 225's are HP A/S tread for the summer, 205's are Blizzaks for the winter, not an even comparison. 22545-R17 tires are 1.34 inches (34 mm) smaller in diameter than 215/55-R17 tires and the speedometer difference is 5.1%. Beregond Supersonic. February 11, 2010. 215.45.17 and 225.45.17. the (45) means 45% of 215, and 45% of 225 ( can any pro tell me if i am wrong thanks ) 45% of 215/225 is the thickness or the profile of the tyres. so a 215.45.17 tyres will have a profile of 96.75 thickness rubber . and 225.45.17 = 101.25 thickness rubber. BETA 1.97% too fast. 1.97% too fast. 215-50R17, 225-45R17 tire size comparison with Size calculator. Use our tire calculator to compare tire sizes based DavantiGuarantee. One Year Tyre Life Guarantee. 215/45/R17 / Load 91 / Speed W. Mileage. Dry Roads. Wet Roads. Low Noise. More Info. Add to Quote. 24540-R17 tires are 0.26 inches (6.5 mm) smaller in diameter than 225/45-R17 tires and the speedometer difference is 1.0%. TireSize Calculator - Tire & Wheel Plus Sizing. BETA. 225-45R17 tire size comparison with Size calculator. Use our tire calculator to compare tire sizes based on tire diameter, radius, sidewall height, circumference, Vay Tiền Trả Góp Theo Tháng Chỉ Cần Cmnd.

215 40 r17 vs 225 45r17