Compare255/45 R19 vs 245/50 R18. Tire Size and Comparison Calculator calculate tire diameter from code and compare speedometer differences for tire sizes. The first number 255 is the tire width in millimeters. The 2nd number 45 is used to calculate the 25535-R18 tires are 0.69 inches (17.5 mm) smaller in diameter than 245/40-R18 tires and the speedometer difference is 2.7%. Newtire size. / R. Calculate. 235/50 R18 vs 245/50 R18 comparison results: Speedometer difference. Welcome to our handy wheel and tire size calculator! Put your current tire 5861 Better Fuel Economy Factory Ratios Increased Power. 245/40-R19 tires are 1 inch (25.4 mm) larger in diameter than 245/40-R18 tires and the speedometer difference is 3.8%. Inthe tire comparison table above, you can see a detailed calculation of the size difference between 245/40 R18 and 245/45 R18 tire. The calculation results are presented in the form of visual infographics, on which tire Thecalculation results are presented in the form of visual infographics, on which tire with size 245/40 R18 is on top, and tire with size 245/40 R19 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. 24545-R18 tires are 1.06 inches (27 mm) smaller in diameter than 275/45-R18 tires and the speedometer difference is 3.8%. FitmentGuide. The overall diameters of the 235/45R18 and 245/45R18 are within 1.3% of each other. According to the 3% replacement guideline, these sizes are interchangeable 24545-R18 tires are 0.43 inches (10.9 mm) larger in diameter than 235/50-R17 tires and the speedometer difference is 1.6% Jv3gF.

245 45 r18 vs 245 40 r18