Checking at every rest stop paid off for me last fall. I apparently lost a grease seal, and the hub ran dry. The bearings had disintegrated and the wheel was at a noticeable angle. The repair shop couldn't get the race off and I had to have the axle replaced. I hate to think what would have happened had I not stopped at the rest stop.
2010 Rockwood 8280WS Fifth Wheel
2013 F350 Crew Cab SRW, Standard Bed PS Diesel
Reese Airborne Pin Box, Reese 16K Manual Slider
Camped 28 Days in 2012, 23 Days in 2013, 29 Days in 2014, 30 Days in 2015, 9 Days in 2016