How long a 747 tire lasts depends on usage, landings, and maintenance, but Boeing 747 main landing gear tires have relatively short lifespan compared to car tires due to extreme stresses of takeoff and landing. A 747 has 16 main tires plus 2 nose tires, and each main tire is a large, high-pressure tire designed to handle heavy loads and high speeds. On average, a 747 tire lasts about 200 to 300 landings or takeoffs before needing replacement or retreading, which translates to roughly 300 to 500 flight cycles depending on airline, runway conditions, braking, and weight. Some airlines report replacing tires every few months with heavy use, while retreading can extend total life of tire carcass through multiple retreads, similar to truck tires, with each carcass retreaded up to 5 to 7 times. Factors affecting tire life include hard landings, heavy braking, high temperatures, underinflation, and runway debris. Tires are inspected before each flight and pressure checked. Cost of each 747 tire is around 1000 to 2000 dollars plus retreading costs. So a 747 tire does not last years like car tire, but only a few hundred landings, requiring frequent inspection and replacement for safety, with retreading extending overall carcass life significantly.
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