Topic:LT vs P rated tires on SUV
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T O P I C     R E V I E W
bhurdJust bought Pirelli Scorpian AT's for my '94 Ford Explorer at my local tire shop. I had ordered the LT235/75R15's believing the LT would have stronger sidewalls. However, the LT's were not available from the distributer (sold out?) instead installed the P235/75R15XL. My question the P XL tires have a load rating of 108 versus 104 for the LT. Is there any other differences between P and LT designs? If the load rating is higher for the passenger tire isn't that the main thing I'm after in choosing the LT over a P?
FloydDue to government regulations, the load rating on a P-metric tire must be reduced by 10% when used on a LT/SUV application.
PXL tires obtain their max load at 41psi.
LT tires (LR-C) obtain their max at 50psi.
The PXL are a little smaller, lighter, flex better, ride smoother, and often have a slightly narrower tread face.
Since standard load P metric tires are original equipment on you X, either tire is acceptable and you probably saved yourself some money with the PXL's.
bhurdThanks for the response. So far I'm very pleased with the ride and performance off highway. I wonder if they will wear better or worse than the LT variety?

Question, the tire dealer installed my tire with an inflation of 32 psi (this is a cold measurement taken in the morning before I drove anywhere). Ford, however, recommends only 26 psi. Should I reduce the air pressure to conform? What will doing so improve? wear? handling? performance? I presume it won't improve the mpg. Any thoughts or recommendations?

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