tyre (tyres plural )in AM, use tire A tyre is a thick piece of rubber which is fitted onto the wheels of vehicles such as cars, buses, and bicycles. n-count →
spare tyre
spare tyre (spare tyres plural )
in AM, use spare tire
1 n-count A spare tyre is a wheel with a tyre on it that you keep in your car in case you get a flat tyre and need to replace one of your wheels.
2 n-count If you describe someone as having a spare tyre, you mean that they are fat around the waist.
(mainly BRIT)
INFORMAL