2006 Dodge Ram 2500 ....When driving on highway from speed of 90-100 kmh the front end starts to vibrate. I changed four shocks and front and back axel U-joint, and one wheel bearing. I also put four new tires stil i am having the same problem. I went to the dealer and i spent 215$ diagnosing and they told me one tire and rim no good. Then i went back and changed the tire and rim. Still im having the same problem ! Does anyone know what i am going through...? PLease help me ASAP...