What Causes Car Shaking at Speeds Between 80 to 100 km/h?
2 Answers
The reasons for car shaking at speeds between 80 to 100 km/h are: 1. Unbalanced wheels: Poor wheel balance, abnormal tire wear, or damaged components; 2. Loose suspension: Loose suspension or incorrect wheel alignment, requiring inspection of engine rubber mounts, shock absorbers, and suspension bushings for damage; 3. Warped brake rotors: If shaking occurs during braking, it may be due to uneven brake rotor surfaces, which can be resolved by resurfacing the rotors. Solutions for car shaking: 1. Check the motor: Clean the fuel system and inspect the idle motor for carbon buildup, which should be cleaned if necessary; 2. Inspect spark plugs: Check the condition of spark plugs, high-voltage wires, and ignition coils, and replace spark plugs if excessive carbon buildup is found.
When I experienced shaking at speeds between 80 to 100 km/h while driving, I pondered for quite a while. The most common issue lies with the tires, such as wheel imbalance, where the high centrifugal force at highway speeds causes wobbling. Additionally, uneven tire wear or bulging can also cause this. Last time I checked, I found worn spots on the tires and immediately replaced them with new ones. Aging suspension systems are also quite common; worn-out springs or shock absorbers can transmit vibrations to the car body. Warped brake rotors are another suspect, especially noticeable after hard braking. I suggest not ignoring it, as shaking can easily make the car unstable and affect safety. It's best to go to a tire shop for a wheel balance and four-wheel alignment—it doesn't cost much but is very effective. Regularly check the condition of your tires to avoid problems before long trips.
