DEFINITION: The tire/wheel bounce with a frequency directly related to vehicle speed.

The tire/wheels are unbalanced.

Balance the tire/wheels. Refer to Tire and Wheel Balancing in Vibration Diagnosis and Correction.

The tire exhibits a blister or bump.

Replace the tire. Refer to Tire Mounting and Dismounting in Tires and Wheels.

Improper strut/shock absorber action is present.

Replace the strut. Refer to Strut Assembly Replacement in Front Suspension.

Excessive wheel or tire runout exists.

Refer to Tire and Wheel Runout Specifications in Vibration Diagnosis and Correction.