Idiots spinning the tires, doing donuts, power slides, etc are what erodes trails, not the SXS itself. The (typically wet) soft trails on my property here in WV are fragile compared to most places in the west and there is no erosion and rutting! It's because I'm the one who uses them. My SXS with 10 psi of ground contact, an open differential, and not ever spinning a tire is pretty easy on the terrain, much easier than the ATV's with no differential I used to have, 4,000# tractor, the kids bicycles, or my neighbor's horses who use a short section of one of the trails. One of my SXS's is a Honda Pioneer 520 which does not have a differential so I have to be careful when I use it and even still it will skid exposing bare dirt on sharp corners so it only gets on certain trails and then only when it's dry. From now on I will only buy a SXS or ATV that has a differential.