Here is one you guys and gals may have experienced before. I had a substantial vibration in the steering wheel at speeds above 50. I brought it in to the tire shop and had all the wheels balanced. The tire mech said that three of the four wheels had run out. So I purchased four wheels on Ebay from Toms Wheels, stock 86 wheels that had been chromed. Look good on the car but you guessed it, it still vibrates. The mech said that one of the new wheels had some run out, not bad but some so I put it on the back. I can feel the vibration in the wheel as a left to right shake. I will try new tires, but I am curious, is there something I am not checking?