Definition
A circular rubber and fabric component fitted to an aircraft wheel that contacts the ground, supports the aircraft's weight, absorbs landing and taxi loads, and provides traction for braking and steering. Aircraft tires are constructed of layered rubber compounds reinforced with cord plies (commonly nylon) and are inflated to specified high pressures to handle landing impact and high ground speeds.
Plain English
The rubber wheel covering that touches the runway. It cushions landings, carries the airplane's weight on the ground, and grips the surface so the aircraft can roll, brake, and steer.
Context Anchor
Pilots encounter tires during preflight inspection, taxi, takeoff, landing, and any discussion of landing gear condition or maintenance.
Derivation
From Middle English 'tir' or 'tyre,' originally referring to the iron band fitted around a wooden wagon wheel — the part that 'tied' the wheel together. The meaning carried forward to the rubber band fitted around modern wheels.
Why Pilots Care
Tire condition directly affects directional control and stopping distance; under-inflated or damaged tires can cause blowouts, hydroplaning, or loss of braking effectiveness.
Analogy
Like a car tire but built far stronger to survive the sudden loads and high speeds of touchdown.
Intuition Check
Do not think of an aircraft tire as just the same thing as a car tire. Aircraft tires are built to handle high loads, high landing speeds, and hard contact with the runway.
Example Sentence 1
During preflight, the pilot checked each tire for proper inflation, tread wear, and any cuts or bulges in the sidewall.
Example Sentence 2
After the crosswind landing the nose tire showed flat spots from heavy braking.