What is the reason for severe heat in the left rear wheel of a Santana?

[DiKatherine]

Here are the reasons for severe heat in the left rear wheel of a Santana: 1. Friction: Prolonged friction between the tire and the ground generates heat, which is conducted to the wheel hub, causing its temperature to rise. 2. Braking: Extended braking causes the brake pads to generate high temperatures, which are then conducted to the wheel hub, leading to increased temperature. Below is additional information related to tire pressure: 1. Function of low-pressure tires: Low-pressure tires are mainly used for private cars. 2. Function of high-pressure tires: High-pressure tires are primarily used for large trucks or passenger vehicles. 3. Tire pressure: The recommended tire pressure for high-speed driving is 2.5 kilograms per cubic centimeter.

[DelAvery]

I've been driving a Santana for many years, and it's quite common to encounter overheating in the left rear wheel. Usually, it's due to issues with the braking system, such as a stuck brake caliper that fails to release, causing the brake disc to continuously rub against the brake pads and generate heat. Alternatively, the bearing lubricant may have dried up, leading to excessive friction and rapid temperature rise during rotation. Low tire pressure can also cause the tire to overwork and heat up easily. Sometimes, uneven distribution of brake fluid results in excessive pressure on one side. If not addressed promptly, the wheel hub may deform or even cause a tire blowout, which is quite dangerous. After parking, I often touch the wheel hub to check its temperature—if it's noticeably hotter than the other wheels, caution is needed. Regular checks on the flexibility of the brake caliper, any abnormal noises from the bearings, and maintaining proper tire pressure can prevent this issue. If detected, head to a repair shop immediately for inspection—don't delay until it becomes a bigger problem.

[DelIsaac]

Severe overheating of the left rear wheel should never be taken lightly, as it can lead to catastrophic consequences. For instance, excessive heat buildup may ignite brake fluid or even melt the wheel hub, posing a significant risk of losing control of the vehicle. It's crucial to pull over immediately, turn off the engine, and allow it to cool down. There are multiple potential causes: a seized brake caliper is often the main culprit, as it fails to release pressure, causing continuous friction; worn or insufficiently lubricated bearings generate resistance heat; unbalanced tires or low tire pressure increase friction. Additionally, prolonged high-speed driving or heavy loads can exacerbate the issue. I recommend avoiding harsh braking and refraining from driving fast with heavy loads under normal circumstances. If any issues are detected, promptly check basic points, such as feeling for temperature differences by hand or listening for unusual sounds when rotating the wheel. If all else fails, take the vehicle to a professional repair shop immediately—safety comes first.

[AmyFitz]

Excessive heat in the rear wheels of a Santana is often caused by brake system malfunctions, with the left rear wheel frequently affected by a failed wheel cylinder assembly. Inactive pistons cause the brake pads to remain tightly pressed, generating rapid heat buildup through friction. Heat conduction may damage oil seals or suspension components, compromising overall braking performance. Insufficient lubrication of wheel hub bearings also contributes, as metal friction accelerates heat generation. Timely intervention prevents a vicious cycle leading to component failure. The most reliable check is to inspect whether the brake caliper retracts smoothly.