Hauling the 420 cat backhoe to a job this morning when I noticed smoke coming from the right rear trailer axle.apparently the wheel bearings gave out.by the time I noticed it the friction from everything rubbing together blew the inside dual as I was pulling over .well a tire fire is not real easy to extinguish.I put it out with one of 3 fire extinguishers but it was still hot and smoking.the cops showed up and called the fire department who doused the hotspot just to be sure.if not for the fire Dept I might have been looking for a pond or ditch full of water to Back the trailer into