The aircraft features the largest landing gear and the biggest tires ever used in a commercial jetliner. The six-wheel bogies are designed to spread the load of the aircraft over a wide area without requiring an additional centerline gear. This helps reduce weight and simplifies the aircraft's braking and hydraulic systems. Each tire of a 777-300ER six-wheel main landing gear can carry a load of , which is heavier than other wide-bodies such as the 747-400. The aircraft has triple redundant hydraulic systems with only one system required for landing. A ram air turbine—a small retractable device which can provide emergency power—is also fitted in the wing root fairing.
The aircraft features the largest landing gear and the biggest tires ever used in a commercial jetliner The six-wheel bogies are designed to spread the load of the aircraft over a wide area without requiring an additional centerline gear This helps reduce weight and simplifies the aircraft's braking and hydraulic systems Each tire of a 777-300ER six-wheel main landing gear can carry a load of  which is heavier than other wide-bodies such as the 747-400 The aircraft has triple redundant hydraulic systems with only one system required for landing A ram air turbine—a small retractable device which can provide emergency power—is also fitted in the wing root fairing