Have to admit I "double bag" the tires.
I coat heavily with Aerospace 303; then cover with white tire covers when I put the camper to bed for the winter.
I typically spray the 303 on the tires when I check air pressure and squirt the grease Zerks before every trip.
I also cover the tires when camped for more than a weekend.
Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW