well, when i first got the car i took it out on the highway and had the 80+ mph vibration problems....amongst other problems. I don't get out on the highway very often...but i did today. The vibration is GONE!! I can't beleive it. what could have happened??? I took it all the way up too 100mph and it was smooth as butter. The only thing I can think of is about a month ago i miss shifted and ended up in a lower gear instead of a higher geat...could that have knocked the DS back into allignment???

Peace! -mj

 

Different tires? Wheel balance? Missing wheel weights and/or something stuck in the wheeels (mud/ice)? There are lots of things that can cause high speed vibration, it's very easy to assume it's the driveshaft.

You aren't going to "knock the driveshaft into alignment" though

 

DUHHH!! now i feel like a moron..just put a new set of tire on the back and had them balanced...thanks for the reality check!!!

Peace! -mj