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TrailerTire Load Range And Maximum Load Rating Explanation for a 2006 Skyline Aljo Trailer

Question:

Load range B whats that about? How do you determine what weight tire is capable of handling 1430LBS the whole trailer or one quarter total weight? This is for a 2006 19foot Skyline Aljo trailer.

Expert Reply:

On special trailer tires and light truck tires the Load Range B means it is a 4 ply rated tire with a maximum load of 1,430 lbs. at 35 p.s.i. A Load Range C means a 6 ply rated tire with a maximum load of 1,760 lbs. at 50 p.s.i.

On the Loadstar ST205/75D14 Bias Trailer Tire, # AM1ST84, it is a Load Range B tire. That maximum load rating is per tire, so two tires on the same axle would hold 2,860 lbs. at 35 p.s.i.

They also have a Loadstar ST205/75D14 Bias Trailer Tire, # AM1ST86, which is a Load Range C tire.

The load range will always be stamped on the sidewall of the tire.

Another important thing to remember is to always use a tire designated ST (ST205/75D14), which means special trailer. That means the tire is designed for use on a trailer application. The sidewall and internal construction is designed to handle load and abuse better than a car tire.

The tire ratings are determined by the manufacturer when that tire is designed. It has to meet certain Department of Transportation guidelines to be rated as a certain ply tire and the maximum load for that tire.

I am sending a page link to some information on trailer tires.

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