The Roadmaster Hitch Mounted Spare Tire Carrier # RM-195225 pivots down 90-degrees as shown in the photo, but specific rear door clearance on your RV would depend on several factors so we cannot guarantee your rear doors would still be able to open. The things that matter are the tire size on the RV and of course the spare, the hitch height and the RV's own stance above ground, which is a function of the total load in it.
My contact at Roadmaster hears customer comments all the time on... view full answer...
The Thule Elite Van XT 2 Bike Rack for Ram ProMaster Rear Door part # TH302013 is an excellent option for a 2018 Ram Promaster Van. That said, it is designed to be used with the factory rear windows. Therefore, you would not be able to open the rear windows unless you were to first remove the rack portion but you could still leave the track installed. view full answer...