Definition of ply rating in English:
A number indicating the strength of a tyre casing.
- The load range or ply rating branded on a tire's sidewall helps identify its strength and ability to contain air pressure.
- While there is no industry-wide definition of ply rating, truck tires are frequently marked with ply rating and equivalent load range.
1950s: formerly referring to the number of cord plies in a casing.
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