pneumatic tire

Tires or tyres (see American and British English spelling differences) are pneumatic enclosures used to protect and enhance the effect of wheels.Tires are used on all types of vehicles, from cars to earthmovers to airplanes. Tires enable vehicle performance by providing for traction, braking, steering, and load support. Tires are inflated with air, which provides a flexible cushion between the vehicle and the road that smoothes out shock and provides for a comfortable ride quality.
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Noun
1. a tire made of reinforced rubber and filled with compressed air; used on motor vehicles and bicycles etc
(synonym) pneumatic tyre
(hypernym) tire, tyre
(hyponym) flat, flat tire
(part-holonym) car wheel
(part-meronym) casing