A8 / S8 (D3 Platform) Discussion Discussion forum for the D3 Audi A8 produced from 2003-2010 and Audi S8 produced from 2006-2010

Steering wheel shaking at 30 mph!

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Old Jul 20, 2024 | 05:19 AM
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Default Steering wheel shaking at 30 mph!

As stated the steering wheel is shaking starting at 30 mph and then it shakes less at higher speeds. Hence why I don't think it is wheel related. The wheels have been checked and balanced twice. The steering wheel shakes left and right quite significantly. I will try and post a video. If there is a video you might as well just congratulate me now. Could it be a wheel bearing? There is no noise. My shop has not found the problem yet. Going to a different shop soon enough but they can't get me in right away. I would see what you guys think and THANK YOU IN ADVANCE
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Last edited by Yesitsme; Jul 20, 2024 at 05:41 AM.
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Old Jul 20, 2024 | 07:58 AM
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Does it happen primarily with acceleration or when you are coasting too?
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Old Jul 20, 2024 | 09:54 AM
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Default Yes coasting too

Yes it happens all the time. I’m sure this would be an issue of a shot ball joint or tie rod, but they didn’t find that…yet
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Old Jul 21, 2024 | 03:25 PM
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You"ve said the shop looked at your tire balancing. Balancing only effects vibrations at hwy speeds so look to see if you have a slightly out of round tire front tire. That is what you would feel at lower speeds.
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Old Jul 21, 2024 | 06:45 PM
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If not control arms, and wheel bearings are OK, I would also check the tie rods.
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Old Jul 21, 2024 | 09:27 PM
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Yes, thank you to both of you and I will check those. Will report back soon.
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Old Jul 23, 2024 | 07:45 AM
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Miles on car? Suspect upper control arms. Every 50-70K. Ever done? If no idea, likely have your answer. When, not if on D3. Even if done, if done with junk parts, won't even do 50-70K.

Literally a thousand posts on this board about them. Most common mechanical fail point on D3, even when they were in their early years.

If shop struggling, unbolt at upper pinch point at hub (ball joint end) and then move the user arms around the rubber bushing axis. Any deep cracks and they are gone. And, if you get it only next month, start spraying on the penetrant now to the pinch bolt--weeks, not days if possible. They often break if not very careful, and then world of hurt to get out given exactly how they are located.

Alternate easy diagnostic is look for wear on inside of front tire tread. If more pronounced there, a secondary clue--suspension seems to move around enough when worn to grind down those inner edges abnormally.

By your age and depending on miles, could also be lower arms, or lower probability the tie rod ends.
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Old Jul 26, 2024 | 04:34 PM
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As mentioned, likely a bent wheel or blown control arm bushings/joints.
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