225/90-R15 tires are 6.58 inches (167.2 mm) larger in diameter than 170/55-R17 tires and the speedometer difference is 21.3% This tyre has a initial tread depth of 7.6 mm in 225/60 R18. However, this can vary depending on the dimension (6.6 mm - 245/45 R19, 7.4 mm - 205/55 R16). It can be compared to PremiumContact 6 , which is a tyre from Continental (Germany) and has a rating of 92%, compared to 89% of the Bridgestone in question. Tyres from £148.16 to £162.19. Bridgestone Battlax T31. 180/55 R17 W (73) Motorcycle. Rear. Mail Order. £ 130 .76. Pay in 3 interest-free payments of £43.59 0% interest for 4 month. 170/60-17 180/55-17 Difference; Diameter inches (mm) 25.03 (635.8) 24.8 (629.8)-0.24 (-6) -0.9%: Width inches (mm) 6.69 (170) 7.09 (180) 0.39 (10) 5.9%: Circum. inches (mm) 78.64 (1997.42) 77.9 (1978.58)-0.74 (-18.85) -0.9%: Sidewall Height inches (mm) 4.02 (102) 3.9 (99)-0.12 (-3) -2.9%: Revolutions per mile (km) 805.71 (500.64) 813.39 (505.41 Better Fuel Economy Factory Ratios Increased Power. vs 180/55-17 vs 175/60-17 vs 190/55-17. 170/50-R16 tires are 1.67 inches (42.4 mm) smaller in diameter than 170/55-R17 tires and the speedometer difference is 6.8%. 180/55-R17 tires are 0.76 inches (19.4 mm) larger in diameter than 170/60-R16 tires and the speedometer difference is 3.1% zyJpk.

170 60 r17 vs 180 55r17