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cekkk
Explorer
Jul 22, 2013

GVWR -vs- GAWR Question

Apologies if this is the wrong category for my question.

My TT's GVWR is 10,500#, yet the axles have a GAWR of 5000#. If the total load goes over 10k and the trailer is not hooked to a hitch, it would seem the axles are overloaded, no matter how little. Am I missing something? :?

4 Replies

  • The GVWR on my 2500HD is 9200lbs. The RAWR is about 6050lbs and the FAWR is about 5200lbs. The axle ratings are based on the tires and the pressure that they run at. Added up, that gives you a total weight using AWR's of 11250lbs. There doesn't seem to be any rhyme nor reason for the difference between the GVWR and the combined axle weights. It may have to do with the spring sizing on the truck. The key is that I'm not to load my truck to greater than 9200lbs which I try very hard to maintain. It's very difficult to do, when the DW wants to bring back a rock from all the places we've been, to put her garden. :W
  • cekkk wrote:
    Apologies if this is the wrong category for my question.

    My TT's GVWR is 10,500#, yet the axles have a GAWR of 5000#. If the total load goes over 10k and the trailer is not hooked to a hitch, it would seem the axles are overloaded, no matter how little. Am I missing something? :?


    If you are not hooked to a hitch, the tongue weight is still resting on someting.

    TT manufacturers are not much concerned about how heavy the trailer is when standing still. If GVW is close to GVWR when towing, it is quite likely that GVW and axle loads will go over ratings when 6 to 10 people get into the parked trailer. But then your stabilizer jacks are likely to be down, and will carry some part of the weight, not all of it going through springs to axles and tires.

    Static loads on suspension systems are much smaller than the dynamic loads when moving, bouncing down the road, slamming into road defects, being blown around by winds. With ratings based on those circumstances, there are big safety margins for being parked.
  • Of course. And my "factory" tw is 15%. I knew I was missing something.
  • The manufacturer accounts for a percentage of the weight to be carried by the tongue. If it's not hitched up then that tongue weight is supported by the tongue jack.

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