What to Do If the Brake Disc is Cracked?

[LaAngelina]

The solution for a cracked brake disc is to replace it, and the replacement method is as follows: 1. Lift the vehicle and remove the tire; 2. Remove the screws of the brake caliper, lift the brake caliper, and take off the old brake disc; 3. Push the brake piston back in, and install the new brake disc; 4. Reinstall the brake caliper, tighten the caliper screws to the required torque, and reinstall the tire; 5. Press the brake pedal several times to eliminate the gap between the brake pads and the brake disc, allowing the brake piston to reset. Situations that require brake disc replacement include: 1. The thickness of the brake disc is less than the minimum maintenance standard allowed by the vehicle manufacturer; 2. The wear indicator on the brake disc contacts the brake disc; 3. The brake disc experiences abnormal wear or tapered wear.

[LeWilliam]

A cracked brake disc is extremely dangerous, and as a veteran driver with over a decade of experience, I must emphasize: if you spot any cracks, do NOT start the car. Pull over immediately, turn on your hazard lights, and move away from the vehicle. Never attempt DIY repairs or continue driving—the brakes could fail at any moment, leading to rear-end collisions or rollovers. Call a tow truck right away and have the car transported to a professional repair shop for thorough inspection. Potential causes include overheating from frequent hard braking, material fatigue, or substandard parts. When replacing, always install new brake discs in pairs to maintain balance, and take the opportunity to inspect brake pads and fluid lines. Safety is non-negotiable—don't compromise it to save money. As a preventive measure, check disc temperature by touch after parking.

[OliviaLee]

As an ordinary car owner who enjoys DIY maintenance, I have my own experience with cracked brake discs. First, don't panic. Park the car and turn off the engine, then use a flashlight to inspect the disc surface for obvious cracks. Once confirmed, don't drive to the repair shop—call for a tow truck instead, as the risk of brake failure while driving is extremely high. When replacing brake discs, opt for OEM parts or high-quality brands; don't cut corners to save money. Additionally, check for wear on the calipers and pads—replacing them together is safer. It's an expense worth making. Perform monthly inspections to avoid similar issues, and use engine braking on downhill slopes to reduce heat buildup. Remember, safe driving starts with attention to detail.

[Lacey]

Having worked in the auto repair industry, cracked brake discs are a common issue. The solution is straightforward: stop the vehicle immediately and do not continue driving. Call a tow truck to transport the car to a shop for a new disc replacement. Once a brake disc cracks, it must be scrapped. Check if the brake pads and calipers are damaged and perform maintenance as needed. After replacement, test the braking force to ensure it's even. The cause is usually overheating or subpar part quality. It's recommended to use high-temperature-resistant discs and regularly maintain the cooling system. The cost isn't high, but don't delay the repair.