On the sidewall of a tire for commercial vehicles, if the load index shows two numbers separated by a slash (such as 150/146), what does it indicate?

Question

DentroTest · Accepted Answer

On the tires of heavy and commercial vehicles it is common to find a double load index separated by a slash (for example, 150/146). It indicates the maximum capacity of the tire according to how it is fitted: the first number (the higher one, 150) corresponds to single fitting, with one wheel on each side of the axle, and the second (the lower one, 146) to twin fitting, with two wheels coupled on each side. In twin fitting, each tire can carry somewhat less load than in single fitting. That is why it is a mistake to think that the double index distinguishes between the front and rear axle, or between a fixed and a liftable axle: the position of the axle or its type does not determine those two figures.

On the sidewall of a tire for commercial vehicles, if the load index shows two numbers separated by a slash (such as 150/146), what does it indicate?

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