The blow outs are not restricted to one load range; do some search and you will find that the HiSpec brand is problematic regardless. I would have neither HiSpec or Trailer King on any trailer I owned due to these brand's propensity for failure and the damage to the trailer that these blow outs cause.
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wiredgeorge Mico TX
2006 F350 CC 4WD 6.0L
2002 Keystone Cougar 278
2006 GL1800 Roadsmith Trike
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