A spare tire (or stepney in some countries) is an additional tire (or tyre; see spelling differences) carried in a motor vehicle as a replacement for one that goes flat, has a blowout, or has another emergency. Spare tire is generally a misnomer, as almost all vehicles actually carry an entire wheel with a tire mounted on it as a spare rather than just a tire, as fitting a tire to a wheel would require a motorist to carry additional, specialized equipment.
A spare tire (or stepney in some countries) is an additional tire (or tyre; see spelling differences) carried in a motor vehicle as a replacement for one that goes flat, has a blowout, or has another emergency. Spare tire is generally a misnomer, as almost all vehicles actually carry an entire wheel with a tire mounted on it as a spare rather than just a tire, as fitting a tire to a wheel would require a motorist to carry additional, specialized equipment.
Source: Wikipedia "Spare tire" · CC BY-SA 4.0
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