I don't believe anyone is going to be able to give you an absolute answer on how far you'll be able to turn before the 5th wheel RV hits the cab. It all depends on the configuration of the front of the 5th wheel RV and the placement of the hitch as it determines the centerline of the pin axis. Unless you have the precise dimensions to lay everything out on paper, it's going to be a trial process when you first hitch up.
2016 Ram Longhorn 3500 Dually 4x4 CCLB, 385/900 Cummins, Aisin AS69RC, 4.10
2014.5 DRV Mobile Suites 38RSSA #6972
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