We do feel the rig pulls better with the G614's, but I've not seen any major milage difference. With the weight of our rigs it it's minorly up hill one way it will produce that type of difference on the round trip.
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Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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