I copied the TSB here so you all don't have to hunt for it!
2009 Dodge Truck RAM 1500 2WD V8-5.7L
Vehicle Level Technical Service Bulletins All Technical Service Bulletins Wheels/Tires - Vehicle Vibration/Shake At Highway Speed Wheels/Tires - Vehicle Vibration/Shake At Highway SpeedNotesNUMBER: 22-001-09
DATE: Pending Approval
Vehicle Vibration Or Shake At Highway Speed
This bulletin provides information to diagnose vehicle vibration concerns at or during PDI or if the vehicle is stored for a length of time prior to delivery.
2009 (DS) Ram Truck (1500)
Tires used on the 1500 Ram models can develop a temporary flat spot when sitting on the lots and or while being shipped. This condition is more prevalent on 4 x 4 Models with 20" tires and wheels due the additional weight on the front tires from the unique components (i.e., front axle and transfer case). Weather is a critical factor and temperatures significantly above and below normal temperatures can temporarily "flat spot tires when vehicles are shipped by car hauler or rail or if vehicles are stored for an extended period. The vibration may be felt in the steering wheel and I or seat, and may be most noticeable at highway speeds, 60mph (96 kph). This may be misinterpreted as an out of balance tire.
If the tires are flat-spotted due to shipping or sitting in the lot for an extended period, the vehicle vibration will go away after the tires are warmed up, (normally 10 to 20 miles of highway driving depending on outside temperatures).
1.Road test vehicle 10-20 miles to allow the tires to obtain operating temperature.
2.If highway driving doesn't resolve the vehicle vibration, follow the procedures outlined on DealerCONNECT>TechCONNECT > Group 22 - Tires and Wheels.
NOTE :Replacing tires should only be done as a last resort after all appropriate wheel and tire diagnostics have been completed. U.S. dealers can contact the MOPAR tire program if assistance is needed with obtaining any tire. Canadian dealers can contact the MOPAR tire program if assistance is needed with obtaining any tire.
Reimbursable within the provisions of the warranty.