Alternate Lug Wear
Alternate lugs worn to different tread depths around tire circumference. May be every second lug, every third, etc... or a combination thereof.
Mismatched inflation pressures or tire diameters in a dual assembly and certain conditions such as pick up and delivery operations and variations in loads. Is accentuated by slow rate of tire wear and by worn or poorly maintained suspension components or axle misalignment.
Continue to run out unless tread depth variations become severe. Rotate to faster wearing position, i.e., single screw tractor or rear drive axle. Check for worn or damaged components and axle misalignment. Review tire maintenance practices and tread design selection.