Why Do the Front Wheels of a Car Get Hot?
2 Answers
Possible causes include overly tight bearings leading to abnormal wear or brake drag causing drum friction. Specific details are as follows: 1. Hub overheating: Hub overheating is generally caused by bearings that are too tightly assembled or insufficient lubrication. Excessive temperature can melt the grease inside, affecting braking performance, and in severe cases, may burn out the bearings. 2. Brake drum overheating: The brake drum, commonly referred to as the 'drum,' measured with a thermometer, heats up whenever the brakes are applied. It is the part of the front wheel that generates the most heat. The temperature of the brake drum is related to ambient temperature, driving speed, frequency of braking, vehicle weight, and road conditions. A few brake applications can raise temperatures to 100-200 degrees Celsius, and for heavy trucks going downhill, it can even exceed 300 degrees Celsius.
I've been driving for over 20 years, and hot front wheels are a common occurrence. The most frequent cause is overheating of the braking system—going down long slopes or frequent hard braking causes intense friction between the brake pads and discs, transferring heat to the wheels. In severe cases, it could even lead to a fire. Other reasons include insufficient lubrication or damage to the wheel bearings, making them harder to turn and generating heat; low tire pressure or excessive wear increases rolling friction and raises temperature; or issues with suspension components causing misalignment and friction-induced heat. I must remind you to check the wheel temperature by touch if it feels abnormal and visit a professional shop as soon as possible. Don't cut corners to save time or money—waiting could lead to an accident.
