||wheel lug nut safety
In a recent tech tip a suggestion was published regarding paint marks on lug nuts for visually checking tightness. With apologies to submitter David Clum "NO - NEVER".
There are many reasons for retorquing lug nuts. As an RVer for 43 years and retired long haul trucker, I have seen many wheel nut problems.
Wheel nuts don't have to turn to be loose. The wheel may not have been centered when installed, the bolts may stretch due to overtorquing, paint rust or dirt may be present between the wheel and the brake drum. A paint mark is NOT a substitute for checking torque! On heavy trucks it is mandatory (in Canada) that wheel nuts be retorqued 100 miles after a wheel change or removal. Not a visual inspection.
It is entirely possible that a wheel could be loose and the nuts welded to the rim. The ONLY way to properly check torque is with a wrench, and the proper torque should be used.
Jim Prentice - Life Member - Good Sam
Authored by: Jim Prentice
This tip appears on the Tech Tip Guide on page 0.