I can comment on the newmars with the dual tandems they had a problem with them you can never get the bounce out of the fifth wheel when it's stationary and parked. the problem is they had to move the frame in so far to get the dually tires underneath it that they can't get the jacks outward enough to stabilize it. Do they tow great yes do they turn and have more weight capacity yes but you got to deal with more bounce in the campground. Not even an HVH system can take the bounce out.
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08 GMC C-4500 w/Custom bed. 8.1L
45ft 2007 Teton Reliance Experience XT-4
TSLB Trailer Saver w/ 3rd airbag
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