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Need help! Thumping from rear left tire!

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Old 02-03-2018, 12:01 PM
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Humanrekingball
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Default Need help! Thumping from rear left tire!

I have a 2001 Mustang Gt. She has about 112,000 miles. The issue I am having is a thumping noise. Almost like a flat but not quite as violent. It also increases/decreases with tire speed. It has brand new tires and rims. It doesn’t always make the noise sometimes it’s non-existent sometimes it’s non-stop. Do you guys think it could be wheel bearing/hubs or suspension related?

Thank you guys for the help,
Kyle
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Old 02-03-2018, 12:04 PM
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Humanrekingball
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Originally Posted by Humanrekingball
I have a 2001 Mustang Gt. She has about 112,000 miles. The issue I am having is a thumping noise. Almost like a flat but not quite as violent. It also increases/decreases with tire speed. It has brand new tires and rims. It doesn’t always make the noise sometimes it’s non-existent sometimes it’s non-stop. Do you guys think it could be wheel bearing/hubs or suspension related?

Thank you guys for the help,
Kyle
On that note I have also jacked the car up and tried to move the tire. Everything seems solid. Shock absorbers seem straight. Nothing looks out of the ordinary. They guy before be supposedly re-did the rear end. I don’t know how true that is. But it does look like someone took a sledge hammer to the end of the hub where the rim sits on. It’s kind of mushroomed out. We had to file it down the make the rim for up on it. However it has been working so far. None of the lug nuts have come loose. The only problem is that noise
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Old 02-03-2018, 12:45 PM
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Z28KLR
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Was the noise present prior to installing the new wheels?

Happens when going straight, when turning right or left, or just whenever it feels like?
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Old 02-04-2018, 01:17 PM
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slipperman
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The area the rim interfaces with the hub is critical.
If the hub face is not flat and true (no axial run-out), the rim will not set perpendicular to the axle center line.
The displacement is exaggerated out at the wheel edge creating a wobble as the wheel rolls.
You may need to replace the axle, which is really easier to do than you might imagine.
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Old 02-04-2018, 08:42 PM
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Humanrekingball
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Originally Posted by Z28KLR
Was the noise present prior to installing the new wheels?

Happens when going straight, when turning right or left, or just whenever it feels like?
It just happens whenever it feels like. Sometimes it doesn’t do it at all. Sometimes is does it all the time.
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Old 02-04-2018, 08:42 PM
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Humanrekingball
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Originally Posted by slipperman
The area the rim interfaces with the hub is critical.
If the hub face is not flat and true (no axial run-out), the rim will not set perpendicular to the axle center line.
The displacement is exaggerated out at the wheel edge creating a wobble as the wheel rolls.
You may need to replace the axle, which is really easier to do than you might imagine.
That makes a lot of sense thank you very much for the input!
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