Have been on any steep climbs where you needed a some wheel speed to make it up to the flat before? Trust me, that 5000#+ (assorized) TJ of mine lands pretty hard after launching off a 2 wheel wheelie climb onto the flat!I think this is totally different than a travel trailer where there is 3500# bearing down on one hub/wheel. I'm not overly cautious with my other vehicles, just my tow vehicle and RV.
Oh...and BTW, I keep spare axle bearings and U joints onboard too.