3484. 3593. 3654. 3878. 4190. 4870. Better Fuel Economy Factory Ratios Increased Power. 275/70-R17 tires are 0.69 inches (17.5 mm) larger in diameter than 245/75-R17 tires and the speedometer difference is 2.2%. 245/45-R17 tires are 0.52 inches (13.3 mm) larger in diameter than 215/60-R15 tires and the speedometer difference is 2.1%

Most Popular 245/45-R17 Comparisons vs 225/50-17 vs 225/45-17 vs 235/45-17 vs 275/40-17 vs 255/45-17 vs 255/40-17 vs 245/40-18 vs 225/55-17 Similar to the Miata tire calculator and 1010 tire calculator.

245/45-R17 tires are 0.65 inches (16.5 mm) larger in diameter than 255/40-R17 tires and the speedometer difference is 2.5%.
245/75-R17 tires are 1.93 inches (49 mm) larger in diameter than 245/65-R17 tires and the speedometer difference is 6.1%.
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245 40 r17 vs 245 45r17