I like the off road wheel kit. It is very helpful on rough pavement(parking lots, etc.). Works well for gliding over large cracks in sidewalks. Have only had limited opportunity to use it in actual dirt/gravel conditions so far. The only negative I have is the wheels were not sufficiently tightened to the tubes resulting in excessive wobble(not good when you are using the walker for balance. I snugged them up only to have the wobble reappear. Have to figure out how remedy this one.