What is Maximum user weight?

Maximum user weight is the heaviest person a machine is rated to carry, and going past it can affect both safety and the warranty. It is one of the first numbers to check, because a machine built for a lighter user will shake or wear faster under heavier loads. Concept2 and Ergatta rowers rate 227 kg, while Bowflex and Horizon Fitness treadmills start at 170 kg. Space for the equipment matters too, so measure the room and your own weight against the rating before buying.