What Causes the Rear Wheel of a Motorcycle to Become Extremely Hot?

[VanColton]

The reasons for the rear wheel of a motorcycle becoming extremely hot include prolonged braking, riding with the brake engaged, bearing damage, and insufficient tire pressure. Below are detailed explanations and solutions: Prolonged Braking: Whether the rear wheel's braking system is drum or disc, prolonged braking will cause the rear wheel to overheat, especially in drum brake systems, where the likelihood of this phenomenon is higher due to generally poorer heat dissipation. Riding with the Brake Engaged: Riding with the brake engaged is equivalent to riding while keeping the brake pedal pressed. This condition easily leads to wheel overheating, and the primary cause of riding with the brake engaged is directly related to brake system malfunctions. Bearing Damage: The rear wheel's ability to rotate smoothly mainly depends on the bearings inside the hub. However, if the bearings lack lubrication, the operational resistance increases, leading to damage, which in turn causes the hub's temperature to rise excessively. Insufficient Tire Pressure: When the tire pressure is too low, the tire's deformation during operation becomes excessive, resulting in overheating or excessive heat buildup.