I ride in areas where there are a lot of tire killers.  Rocks, small stumps branches and so on.  I just came across a company named RP Advance Mobile Systems.  They seem to be some kind of start up selling modded Can Ams primarily to law enforcement and they look to be hoping to cash in on military contracts as well.  They offer several different atv replacement run flat tires.  I'm just wondering if anyone has had experience with them.  Of course the RP Advance website is claiming to be the best tire out there since pneumatic wheels were invented, but what about the real world?  I don't have a military sized budget to buy my toys with.