I have a Coachman Prism 2013 on a Mercedes Sprinter 3500 chassis. This summer I logged 18 K miles on a trip to Alaska and back. I can say I am basically very pleased with the performance of my RV, but...
I always checked tire pressures each night after stopping for the night. Until the last 300 mile leg of a trip home. When I checked the tire pressures the next morning, one inside dually had '0' air pressure. A quick check found a 10" spike in it. Not a blowout but just a slow leak. I replaced both rear tires. The one with the spike and the one carrying the entire load for some part of that 300 mile leg. Now I have a TPMS system with a monitor in the cockpit. Cheap insurance.