You must have a lot of available storage to haul 4 loaded drums around for "just in case". If carrying the hubs you just as well carry 4 of the brake backing plates also, then you can completely rebuild all 4 axles "just in case".
For 10 years I carried a set of bearings, a couple seals, a handful of bronze spring bushings & grease for " just in case", never needed the bearings or bushings, thankfully, but did use/replace the seals & grease annually when I packed the bearings.
If you've bought an older used RV with unknown maintenance I'd definitely be tearing the hubs apart before taking a long trip, pick up a set of spare bearings & seals then no need to haul the truck load of spare parts.
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Full-timed 10+ years
Sold '13 Redwood FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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