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

Tire/wheels are unbalanced

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

Tire exhibits a blister or bump

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

Improper strut/shock absorber action

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

Excessive wheel or tire runout

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