Vectoring

NOTE:
^ Vectoring is a technique used to reduce radial or lateral runout-and to even dynamic balance on tire and wheel assemblies. Vectoring can be accomplished by the positioning of the tire on the wheel and the positioning of the tire and wheel assembly on the hub/rotor.

^ Always balance the tire and wheel assembly after vectoring.

Tire to Wheel Vectoring
1. Determine visually. which runout needs to be minimized.






2. If radial runout is the problem, take a measurement on the center tread rib. If the tread is uneven, wrap tape tightly around the tire, record the runout magnitude, and mark the high spot location.
3. If lateral runout is the problem, take a measurement on the sidewall just below the edge of the tread shoulder. Record the runout magnitude, and mark the high spot location.
4. Mark the tire sidewall at the valve location.
-This is the 12 o'clock position.
-The location of the high spot is always with respect to the clock location on the wheel.






5. Break the tire and wheel assembly down on a tire mounting machine and rotate the tire 6 hours (180°) on the rim, then do the following.
a. Inflate the tire and measure the runout in question.
b. Record the magnitude and the location of the high spot (Valve stem is 12 o'clock).
6. If the clock location of the high spot remained at or near the clock location of the original high spot, the rim is the major contributor to the runout problem.
-Confirm by removing the tire from the wheel and check the wheel rim runout.
-If the wheel rim runout exceeds guidelines, replace the wheel.
7. If the clock position of the high spot is 6 hours from the original high spot, the tire is the major contributor to the runout problem,replace the tire.
8. After correcting the tire to the wheel vectoring, balance the tire and wheel assembly.

Tire And Wheel Assembly to Hub/Rotor Vectoring






1. Mark the wheel hub bolt nearest the valve stem for reference.
2. Rotate the assembly two wheel hub bolts and check the runout. Several positions may have to be tried to locate the optimum location, this can be effective for both radial and lateral runouts.
3. If there is some looseness in the wheel hub bolt holes, radial runout can be reduced by loosening the hub bolt nuts slightly, moving the wheel position on the bolts and then tightening the nuts.
4. Balance the tire and wheel to hub/rotor assembly this will compensate for any imbalance in the brake rotor, drum, or wheel cover.