- Unbalanced tires. This is the most common cause of shaking at a specific speed. When tires are unbalanced, they can cause the car to vibrate at certain speeds. This can be caused by uneven tread wear, a bent rim, or a loose wheel lug nut.
- Warped brake rotors. If the brake rotors are warped, they can cause the brake pads to grab and release unevenly, which can cause the car to shake. Warped rotors can be caused by overheating or uneven wear.
- Bent or damaged suspension components. If the suspension components are bent or damaged, they can cause the car to shake at certain speeds. This can be caused by hitting a pothole or curb, or by wear and tear over time.
- Driveline issues. Driveshaft problems, such as a worn or damaged universal joint, can also cause the car to shake at certain speeds.
What to Do if Your Car Shakes at 40 MPH After Brakes Done
If your car starts to shake at 40 MPH after you've had your brakes done, it's important to have it checked out by a mechanic as soon as possible. The problem could be with the tires, brakes, suspension, or driveline. The sooner you get it fixed, the better, to avoid further damage to your car.
Here are some things you can do to troubleshoot the problem:
- Check the tire pressure. Make sure the tire pressure is at the recommended level for your car. If the tire pressure is too low, it can cause the tires to wobble and shake.
- Inspect the tires. Look for any signs of uneven tread wear, bulges, or damage. If you see any problems with the tires, you will need to have them replaced.
- Listen for any unusual noises. If you hear any unusual noises coming from the car, it could be a sign of a problem with the brakes or suspension.
- Have the car inspected by a mechanic. If you can't find the cause of the shaking, it's best to have the car inspected by a mechanic. They will be able to diagnose the problem and recommend the best course of action.
By following these tips, you can help troubleshoot and fix the problem of your car shaking at 40 MPH after having your brakes done.
