Air Brake Disc Pads problems of the 2001 Chevrolet Malibu

Car has vibrations at higher speeds 60+ was told it was tires/wheels they were replaced for $280 for tires and $200 for just steel rims. Car still vibrated at high speeds and also felt like rotors needed to be replaced-the kind of vibrating when braking. Replaced rotors and brake pads $49 a piece for rotors and $40 a piece for brake pads. Car continued to vibrate except when stopping. After time now (3 mos) when the car is vibrating and you go to slow down it shakes the car even worse. Was then told to replace the wheel bearings. Just did that yesterday they cost me $230 not only does the car still vibrate it has a grinding noise when you trun to the right now. Since ive bought it it has vibrations at high speeds and a "rubbing" vv, vv, vv noise when turing right. After replacing wheel bearings the car still makes all the noises and grinds now. Dont know what else to do to fix it, beginning to think im just going to have to replace the entire front end. Really used to trust chevy now im not so sure. I have had way too many problems with this car and I just bought it in july2004- ridiculous if you ask me.