seat vibration. i posted on evo-ny site on this too and granted there could be many possible causes of the vibration i am hearing but wanted to see if the broader audience here had any real world experience with this. basically i ended up replacing my stock advan tires because the alignment was off and i wore out the inside of one tire which will not pass inspection. even with the new tires just balanced (very reputable shop) and aligned i am still getting some vibration at around 65-80 mph..has anyone had this issue and if so what was the cause? thanks for any insight

 

Bump for some answers

 

Try putting the front wheels on the back and see if the shimmy/vibration moves or changes. If it does you might have a bent rim or crappy molded tires(Can Happen). If not than id start checking my front end components(ball joints, tie rod ends, axels, swaybars, etc...) motor mounts, also when you notice your vibration are you on the same road?