I'm not an expert on RV life (actually a newbie) but I am an expert in Predictive Technologies which includes vibration analysis and, as I mentioned, I travel cross-country with my utility trailer loaded with training equipment. Vibration kills EVERYTHING in the trailer, on the trailer, and in the workplace. It increases the likelihood of a fatigue failure (think about constantly bending a coat hanger) of any rigid material (metal or plastic). This is why you check the wheel lug torque regularly. I carry hydraulic trainers. They are full scaled-down HPU's (hydraulic power units) with pump, tank, accumulator, etc. that weigh about 900 lbs each. On one trip the entire top plate vibrated off just from the trailer vibration. I have since installed Nord-Loc locking washers on all my trainers. They maintain a stable clamping load after torquing.
I said all of that to say this and echo the comments regarding empirical and not anecdotal evidence.
In the end, the correct answer could still be - start with quality equipment for the rotating assembly, check temps, pressures, and torques. Perform routine maintenance to check wear, brakes, and bearing lube.
I do have a design question that will cross all platforms. Where does Grand Design get the trailer wheels, are they forged or machined and to they balance those to any standard (G3, G4)?
I said all of that to say this and echo the comments regarding empirical and not anecdotal evidence.
In the end, the correct answer could still be - start with quality equipment for the rotating assembly, check temps, pressures, and torques. Perform routine maintenance to check wear, brakes, and bearing lube.
I do have a design question that will cross all platforms. Where does Grand Design get the trailer wheels, are they forged or machined and to they balance those to any standard (G3, G4)?
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