Hi all. Let me first say hi and I love this site. Bought my baby on sunday and couldnt have been happier. 2012 Ram 4x2 sport black (pictures to follow). Drove truck with smooth ride untill hit highway. Once I hit 75-80 truck vibrates like crazy shakes passanger seat like crazu.. Then at 85-90 vibration lessons and almost goes away. Took truck right back to dealer and they said they would balance tires. Just picked truck up happy again. Hit highway and same thing :-(. Service shop doesnt seem to know what else it can be but said bring it back. I love this truck but its spending more milage and time at dealer than for me. Any suggestions what else this may be. I used search option and didnt see anything exactly like mine but may have missed it. Thanks for any help. I love the truck but didnt pay 40k for a truck to vibrate the heck out of me on highway.