What Causes Vibration When Braking at Speeds Above 100 mph?
2 Answers
Vibration when braking at speeds above 100 mph may be caused by issues with the brake pads or brake discs, or deformation and out-of-round conditions in the wheel hubs or tires. Brake Pad or Brake Disc Issues: For example, if either the brake pad or disc is uneven or deformed, it can lead to excessive runout of the brake disc. Additionally, impurities or oil contamination on the brake pads or discs can also cause this. The solution is to disassemble and inspect the brake pads or discs, replacing them if necessary. Wheel Hub or Tire Deformation and Out-of-Round Conditions: These can result in excessive dynamic imbalance, which can also cause vibration during braking. The solution is to perform a four-wheel dynamic balance check and inspect the tires and wheel hubs. If the deformation or out-of-round condition is too severe, replacement is required.
I often drive on highways, and when the speed reaches 100 km/h, there is a vibration when braking, which is usually caused by uneven brake discs. This could be due to sudden braking or prolonged use leading to overheating and deformation of the brake discs, or uneven wear of the brake pads, which unevenly clamp the rotating brake discs and cause vibration. Additionally, if the road is bumpy or the parking area is slippery, it may also affect the wheels and braking system. It's important to check and address the issue promptly; otherwise, it can lead to wear on brake components, reduced braking effectiveness, and even safety hazards in severe cases. I experienced this last month, and it was resolved only after replacing the brake discs. I recommend regular maintenance of the braking system to ensure proper functioning.
