The245 40r18 has a diameter of 25.72 inches, while the 225 40r18 has a diameter of 25.09 inches. This means that the 245 40r18 is slightly larger than the 225 40r18. The larger 23565-R18 tires are 0.45 inches (11.5 mm) larger in diameter than 245/60-R18 tires and the speedometer difference is 1.5%.
Inthe tire comparison table above, you can see a detailed calculation of the size difference between 235/45 R18 and 245/40 R18 tire. The calculation results are presented in the form of visual infographics, on which tire with size 235/45 R18 is on top, and tire with size
Witha diameter of 25.72 inches, the 245/40R18 provides 0.31 inches (8mm) more ground clearance than the 235/40R18 at 25.4 inches. This extra clearance is useful for off-road Inthe tire comparison table above, you can see a detailed calculation of the size difference between 275/40 R18 and 305/35 R18 tire. The calculation results are presented in the form of visual infographics, on which tire with size 275/40 R18 is on top, and tire with size 305/35 R18 below. Both in the table and in the graph, the tires are . 491 59 345 481 364 271 464 21

235 45 r18 vs 245 40 r18