I'd like to followup on Trukdoc's comment about a 20% safety margin. Is this a suggestion that the OEM manufacturers may be providing a 20% margin beyond their ratings or, to the contrary, that we should be cautious about getting closer than 20% to the OEM's posted ratings? To me, that's a big difference. I have seen references by some on other forums that one should only load up to 80% of an OEMs GVWR and GCVWR numbers, but the posters seldom provide any support for their postings.
And is there any feeling as to whether one or two of the big three have provided a bigger margin, in terms of safety, in terms of their vehicle's ability to meet and exceed posted GVWR and GCVWR?
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