Radial Tire Lead/Pull

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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:
^ Poor tire construction.
^ Uneven brake assemblies.
^ Improper tire and 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 aside force while rolling straight down the road and the tire will tend to roll like a cone. The lead/pull correction chart should be used to make sure that the front tire and wheel alignment is not mistaken for tire lead.
^ Rear tires will not cause lead.