Since you have 6 wheels, the TireMinder Smart TPMS for RVs # TPMS-APP-4 that you mentioned will work, however you won't have enough sensors for all six tires.
Instead, I recommend going with the:
-TireMinder i10 TPMS for RVs and Trailers w/ Signal Booster # TM29FR.
This TPMS includes 6 brass waterproof and dustproof sensors, that will allow you to monitor all 6 of your Winnebago's tires.
These sensors will alert you with changes to your tire pressure, tire temperature, sensor and monitor... view full answer...
We currently only carry two sizes of RV exterior ladders, a 84-1/2" ladder and 99-1/2" ladder. You would need to measure your current ladder to determine if either of these sizes would work for your 2016 Winnebago Via Motorhome.
Surco Universal Exterior RV Ladder - 84-1/2" Long # SP502L.
Stromberg Carlson RV Exterior Ladder w/ Hinges - Aluminum - 99-1/2" T x 12" W - Black # LA-401BA.
Stromberg Carlson RV Exterior Ladder w/ Hinges - Aluminum - 99-1/2" Tall x 12" Wide # LA-401.
These... view full answer...