What Causes the Shaking at Low Speeds Between 30-40 mph?

[OLeo]

The reasons for shaking at low speeds between 30-40 mph are as follows: 1. Wheel dynamic balance issues: If the car shakes within a certain speed range, it may be due to wheel dynamic balance problems or resonance-induced shaking. It is recommended that car owners go to a 4S shop for inspection and repair. 2. Irregular wear: The low-speed shaking of the car is caused by irregular wear of the clutch three-piece set (flywheel, clutch disc, pressure plate), resulting in one or several components becoming misaligned. During the engagement process, the clutch disc cannot smoothly engage but instead engages and disengages intermittently, causing the engine power to start transmitting and then suddenly slip. The vehicle's performance feels like a bouncing sensation. The solution is to replace the damaged component in the clutch three-piece set.