Mostly cloudy this morning, then becoming partly sunny. A chance of showers. A chance of thunderstorms this afternoon. Much warmer with highs in the mid 70s. Southwest winds around 5 mph. Chance of rain 50 percent.
XL means Extra Load range which indicates the tire has a higher Load Index and Maximum Inflation Pressure (usually 51 psi instead of 44 psi) than a Standard Load range tire of the same size.
â¦P245/40R18 or LT315/70R17. But what does it mean when the tire says P245/40ZR18? For that, you need to know a little bit about speed ratings. Speed ratings on tires are expressed in letters and are generally listed along with the load index for a tire after the size, for instanceâ¦.