Operation CHARM: Car repair manuals for everyone.

Radial Tire Lead/Pull






"Lead/Pull" is the deviation of the vehicle from a straight path, on a level road with no pressure on the steering wheel.

Lead is usually caused by:
1. Tire construction.
2. Uneven brake adjustment.
3. Wheel alignment.

The way in which a tire is built can produce lead in a vehicle. An example of this is placement of the belt. Off-center belts on radial tires can cause the tire to develop a side force while rolling straight down the road and the tire will tend to roll like a cone.

The "Radial Tire Lead/Pull Correction" chart should be used to make sure that front wheel alignment is not mistaken for tire lead.
^ Rear tires will not cause lead.