Tire and Wheel Balance
Steering wheel vibration is almost
always the result of tire or wheel imbalance, a tire defect, or wheel out
of true. If you have a vibration problem:
If the car is old, check for loose ball joints and tie rods. Also check that
the wheel bearings are tight.
Check the wheel run-out. The wheel should run within 0.030" (.7 mm)
at the tire bead. If the wheel excedes the maximum, mark the spot of
maximum run-out and rotate the wheel on the hub by 180 degrees (or two bolt
holes). If the spot of maximum run-out does not move with the wheel,
the hub may be defective.
Have the wheel/tire dynamically balanced.
balancers are some of the best for fixing balancing problems.
If the problem persists, you may have a bad tire - tread separation or
out-of-round. Your tire service center may be able to find these problems.