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I take care of my Precision Instruments split beam and it shows 4% no where close to +/- 35%. This is not a cheap beam torque wrench and I trust it. I do ad couple of drops of oil to the threads as the manufacture recommends. Your truck as always do what you think is best. Myself when using my 915A2 and 373A2 trailer on the highway grossing 40k I know my wheels are real close to specs.The inaccuracy of even high-quality torque wrenches is severe, and worse when combined with the inaccuracy of the nut torque's relationship with properly preloading the bolt. We're talking +/- 35% on unlubricated bolts ( https://en.wikipedia.org/wiki/Bolted_joint ). Torque wrench, "mark torque method", shaman's vision... all little more than a guess in the right direction.
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