hey guys , heres my question... when i can drive my car... its all apart now , but when i can..if i get on the thru-way or expressway...somewheres around 75 to 85 my car starts shaking like im about to go back to the future! but i dont have my flux capacitor, haha , well anyways , my wheels are balanced thats about the only thing i know of that is correct right now. My mom used to have a 91 grand am ,and her car did the same exact thing... but i know this is something that cant possibly be inherited from the family genes. any ideas?