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Jun 2, 2008 | 06:35 AM

#31

montecarlo31

Elder User

Joined: Sep 2004

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Quote:

Originally Posted by rich93cw

Michelin LTX is not necessarily a "light truck" rated tire. Some are passenger car tires, with the size designation starting with Pxxx, and some are light truck with the tire size destignation starting with LTxxx. The Michelin LTX P tires are most often designed with a max. inflation pressure of 35 psi. and the LT tires are most often designed with a max. inflation pressure of 50 psi. If you look at two tires of the same xxx size, the P tire will have a higher load capacity than the LT tire regardless of that pressure difference, because the LT tires are derated for truck use according to the Tire and Rim Manufacturers Association and Federal Motor Vehicle Safety Standards for tires. The LT tires are heavier, and have thicker side walls so that they are more durable in truck driving situations such as construction sites, off and unimproved road use. Make sure that the load rating for the tire is higher than half the Gross Axle Weight Rating of your axle, and that the rim is rated for the maximum pressure that is listed on the tire sidewall.

this is bad info. LT tires always have a higher load rating in the same size P metric tire. Load range D/E carry a much higher weight rating the a P metric tire. Why do you think large 3/4 and 1 ton trucks run LT tires and not P metric tires. P= passenger car, LT= Light Truck. They are two different designs. It's a no brainer, more plys = more load capacity. When you move to a LT they use a load rating, C D or E, that is the number of plys used in the construction of the tire.