Inthe tire comparison table above, you can see a detailed calculation of the size difference between 255/40 R18 and 255/45 R18 tire. The calculation results are presented in the form of visual infographics, on which tire with size 255/40 R18 is on top, and tire with size 255/45 R18 below. Both in the table and in the graph, the tires are
Tire1. / R. 225. 55. R 18. Tire 2. / R. 225. 45. R 18. Inch Mill. KPH MPH. Odometer Reading. If you replace 320/60/18 with 235/60/18 for Odometer reading 1000 the actual distance MostPopular 225/45-R18 Comparisons vs 245/40-18 vs 235/45-18 vs 245/45-18 vs 235/40-18 vs 225/40-18 vs 225/50-18 vs 255/40-18 vs 225/50-17 Similar to the Miata tire calculator and 1010 tire calculator.Inshort words, they get known as the performance tires too. Coming the R18 tire, this is an almost similar type of tire to like ZR18. And the only thing that makes a difference is that ZR18 belongs to older production times. The manufacturers allow this old labeling into the tire to make it different from the other ones.
XLdesignation is for extra load. Higher load rated tire. P designates p-metric ratings. Slightly different load rating than non p metric tires. ZR designates high performance tires. They should all fit. If your car requires run flat just be sure you get those. You can verify your recommended load and speed rating on the driver door jamb sticker.
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