I thought I was getting an off road tire but these are not! There is no real tread to speak of. They dont grip or bite. So contrary to the description, they are NOT good for changing terrain. They are totally useless in snow, mud, or wet grass or even dry grass if its over 5 inches. You must keep these on pavement.
I am a fulltime wheelchair user and spend more time off road than on so I KNOW WHAT I AM TALKING ABOUT. What little tread there was didn't last but a month.
Whoever thought this was a good design obviously doesnt use wheels very much. Or else is an idiot. These tire makers should let users design them. That is not the case here.