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Old 08-25-2014, 10:05 PM   #13
TAKPAK
Montana Master
 
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Join Date: Feb 2008
Location: Hillsboro
Posts: 593
M.O.C. #8238
jhudson, we too own a 3725. Love the rig. However, upon putting it on the scales, I was shocked at how much more pin weight it has over our previous 3400, about 1000 pounds more, before we put anything inside. On our GMC 3500 SRW, we are pretty much maxed out on the TV rear axle. I am interested to see how much the manufacturers have changed the ratings, without really changing the parts. Our 2008 is rated at 6400 on the rear axle, we're now running about 6600 on it. And yet, the new rigs with same equipment are rated at 7000 or so. I've talked to the mechanics, and they say it's not an issue, as the specs are conservative to some degree (but don't go overboard). Truck rides fine, it sits level, still has "spring" left in it, just is heavier than before. I questioned the tire manufacturer on the load on the tires, and he said that the 3200 pound each rating (6400 total) is based on the speed rating, which is 95 MPH. At 60 MPH, which is what I drive at, he said it will be no problem with the tires "slightly" over their posted rating. Again, don't go overboard. I have checked the tires at stops for excessive heating, and there has been none. Oddly enough, the 3725 has about 500 pounds LESS weight on the axles/tires than the old 3400 did.
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Terry and Patsy
Vietnam Veteran, US Navy
2017 3810
2015 GMC Sierra 4X4 3500 SRW
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