I came across these 2 videos today, converting what I assume is an older Permobil into an off-road chair. I'm curious how easy it would be to swap out tirs, if it could cause any damage, and if the motors would be damaged by sand?

https://www.youtube.com/watch?v=l_4jX2Tf98I

https://www.youtube.com/watch?v=JSqXZ93Ba9U