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Question:

Vibrating rear drivers side wheel?

My rear driver‘s side wheel is vibrating on my 2001 Hyundai Sonata. It seems to vibrate worse at highway speeds. the wheel vibrated with my old tire (before it went flat), with the donut, and after 4 new tires and a front end alignment (for an unrelated vibrating issue), it continues to shake the entire vehicle. But I have also noticed that when I go around a left curve, (and turn the wheel to the left), the vibration disappears. When the wheel is straightened back out, the vibration returns. I‘ve heard it could be the wheel itself, but the donut is a completely different wheel that still vibrated. When I take the wheel off and turn the rotor, it doesn‘t spin smoothly, and makes a scraping sound during the revolution (possibly rubbing on the brake pads?). Is this part of my problem? I have had the entire wheel bearing assembly replaced in that wheel within the last 2 years. Any advice on what this could be would be very helpful. Thank you.

Answer:

Has anyone done a radial and lateral run-out? This is where they check the wheel assembly for lateral side wobble and radial out of round. It starts with the entire assy, moves to the rim and then the hub.
It's a left wheel bearing 99.9% of the time in this situation. It goes away when you turn left because when you turn, all the weight of the car is shifted to the outside, in this case the right side. So with no weight on the left wheel bearing it doesn't grind. Probably the front bearing but could be the rear. No way to tell with personally hearing it.
It SEEMS LIKE its coming from the rear. Its not. Its not even the wheels at all. It is the steering gear box. I am a professional and had the same problem MANY TIMES! If it was the wheels, it would be the same all the time. Since it is not the same all the time it is the steering gearbox or something in the steering mechanism. Also you said you took off the wheel and spin it. Scraping noise is normal when the wheel is off

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