Gearless hub motor and geared hub motor are common types of hub motors in bicycles, and each type has its own advantages.
Hub motor choice requires evaluating power and torque needs based on intended speed, acceleration and terrain usage.
Hub motors can typically operate for 10,000-30,000 miles depending on vehicle/terrain, with some customers exceeding 40,000 miles.
Hub motors integrated into wheels generate noise primarily from electromagnetic forces within the motor and mechanical vibrations.