What Causes Car Wheels to Overheat?

[Shane]

As long as the brakes are applied, the brake drums of all cars will become hot. The faster the car's speed and the greater its weight, the higher the degree of brake heating, which is due to the principle of energy conversion. Car wheel hub overheating is a common issue, with specific reasons as follows: 1. Wheel hub bearing wear: If the wheel hub bearing is assembled too tightly or experiences abnormal wear, it can cause the car's wheel hub to overheat, and in severe cases, even burn out the bearing. 2. Lack of lubrication in the bearing: If the temperature is too high, the grease inside the bearing will melt and flow out, affecting braking performance and causing the wheel hub to overheat. 3. Abnormal return of the brake caliper: If the brake caliper does not return properly, it can cause the brake pads to lock, keeping the brake pads and brake disc in a constant state of friction, leading to brake drag. In such cases, the temperature of the brake drum and wheel hub will also rise. 4. Frequent braking: During driving, frequent application of the brakes can cause the brake disc to overheat, which may severely damage the brake pads and lead to brake failure. Additionally, overheating of the brake disc will also increase the temperature of the wheel hub.