We have the Roadmaster spare tire carrier part # RM-195125 that would work great in the rear hitch of your 2018 Dodge Roadtrek Simpilcity SRT RV. This can fold down like you are looking for to allow rear cargo area access and was designed for motorhomes like yours. view full answer...
For your 2018 Roadtrek Simplicity built on the SRT chassis the best RV cover is the Adco SFS Aquashed part # 290-12210. This will provide the best protection as well as the easiest install and removal. view full answer...