What causes a car to shake at 35mph only?

A car shaking at 35 mph can be caused by several factors, including an unbalanced tire, misaligned wheels, or worn suspension components. At this specific speed, vibrations may become noticeable due to the resonance frequency of the vehicle's components. Additionally, issues with the drivetrain, such as a failing CV joint or driveshaft, could contribute to the shaking. It's advisable to have the vehicle inspected by a professional to diagnose and address the issue properly.