spoon059 wrote:
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It requires that the brakes be tested to stop the weight
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According to this article:
http://thechronicleherald.ca/wheelsnews/1229762-sae-j2807-the-new-common-standard-for-tow-ratingsThe brake test requires the truck (if SRW under 13K GVWR) be able to stop the max trailer weight in 35 feet from 20 mph "without the use of trailer brakes while remaining within a standard 11.5-foot wide lane." There's nothing about repeated stops and brake fade or higher speeds. Still, it's better than nothing.