Vibration Issues

I own a 1987 BMW 528e, that I just bought 3 months ago. When I bought the car the front brakes were grinding, so I replaced the front brakes and rotors since the rotors had grooves in them. Then I replaced the rear brakes. I also just put new tires and sway bar links on the front. My front Driver’s side sway bar was broken so I just replaced them both. We thought that or the tires was causing the vibration in the steering wheel and the car, but she is still vibrating. From my research it says either my rotors are warped or uneven, but the front ones are new, the back ones are a little shiny but no grooves. Any help is greatly appreciated