How do you collect such archaeological evidence of a wheel not being used? Also, why didn't it strike the very first archaeologists, that the Mayans hadn't used wheels? Didn't they have potter's wheels?
Is it only a legend or history? Didn't they ever come in contact with traders who had used wheels?
The wheeled vehicle is not as intuitive an invention as most people seem to think. In fact, as /u/Daeres explains in this submission, it was only ever invented twice and possibly even only once, in the entire history of mankind. The reason the wheeled vehicle did not reach the Americas before Columbus is that they were cut off from the rest of the world where this technology had spread from its original point of origin in the 4th millennium BCE.