On the sidewall of a truck outer tire, what does the inscription “TUBELESS” indicate?

Question

DentroTest · Accepted Answer

The word “TUBELESS” (from English: “tube” = inner tube, “less” = without) engraved on the side of a tire indicates that it has been manufactured to be fitted directly on the rim with no need for an inner tube. This system has an airtight inner layer (liner) and an adapted rim that guarantee the retention of air under pressure. By contrast, tires that do require a tube carry the inscription “TUBE TYPE”. It is neither a tire exclusively for buses nor does it indicate a special tread for water: the inscription only tells whether or not it has an inner tube.

On the sidewall of a truck outer tire, what does the inscription “TUBELESS” indicate?

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