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Your car makes a thumping noise and it feels like you are going over bumps on smooth roads The frequency increases with speed What could be wrong?

Possible Causes:

- Bad Tires: Check tire conditions and replace if worn out.

- Bent or Damaged Rims: Inspect the rims and replace if necessary.

- Wheel Bearing failure: Check the wheel hubs for play and replace bearings as needed.

- CV joint failure: Check the Constant velocity (CV) joint boot for grease leak or wear and replace as necessary.

- Driveshaft issues: Look for signs of damage or play and repair or replace as needed.

- Transmission problems: Have a professional inspect and diagnose the transmission.