The recall is for 18"/19" and 20" P tires. IMO 1500 truck owners with these size tires may be affected.
The only RV I've heard of with 20" P tires is the Carriage Domani 5th wheel trailer that came with a optional P285/50/20R Goodyear Fortena on 5.2k axles with American Racing (8 lug 20 X 10" rim) wheels.
Hard to believe a trailer mfg would tire placard 20" P tire on a 11k-12k lb trailer. Well.... so much for the tire placard nonsense.
May be those Domani owners that switched to Michelins will see the recall notice or be notified by Michelin or their dealer.