Don't buy it if...

• the motor is not quiet and smooth while running at your top speed
• the motor is not quiet and smooth when walking very slowly
• the belt does not move smoothly at all speeds or it skips, slips, or slides off the center of the treadmill
• the belt and/or deck do not accommodate your size or stride (both running and walking)comfortably
• it does not feel stable, including when inclined
• the controls are not easy-to-use while running.