First of all, 98TA A4 with basic mods.

heres my problem: My car vibrates from
55mph-70mph. I used to think that maybe it was the road i was driving on but now it does it quite a bit. and when the vibrations start my steering wheel shakes like you wouldnt beleive.

My first thought is maybe the driveshaft is off balance. Anyone else wanna put some input in.
I'll be taking it for warrenty work soon.

 

Need a better description, does it feel like it is in the front end thru steering wheel like a loose front end componet or is it a noise/ droning vibration from the rear & does it change it's intensity w/speed like bad u-joints?

 

Sounds like speed sensor may be damaged. You should clean mounting hole w/die-grinder or a dremel just enough to make sensor slide in and out. Do you have a way to pull abs codes to make sure what code it is throwing?

 

Its not throwing a code. Just vibrating. It doesnt make any sound so that would kinda rule out the rear and Drive shaft. I'm thinking it may have something to do with the front end of it. I would have no clue on what to lok for though.