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OldNick
Novice
Feb 27, 2015, 3:12 AM
Post #1 of 7
(1837 views)
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Puzzling wheel noise
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I hear a repetitive growlong from the rear of my car (1999/200 Hyundai Lantra 135,000Km) and I immediately think wheel bearings. I would estimate 2 brief growls per wheel rev.
However I have jacked up the car wheel by wheel and all wheels are silky smooth and silent. My experienbce of bearings (home mechanic so a few sets changed...car, trailer etc) says that if a bearing is noisy than you will hear or feel it with a spin.
Am I wrong? Is the next step to remove each bearing and feel for grinding? Do wheel bearings sometimes growl under load yet not when free spinnning the wheel?
I included the car type in case somebody knows something specific about my car model.
Any advice appreciated.
Nick
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Hammer Time
Ultimate Carjunky
/ Moderator
Feb 27, 2015, 5:39 AM
Post #3 of 7
(1819 views)
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Re: Puzzling wheel noise
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You are only part right. The weight of the vehicle has a large effect on the amount of noise produced. The dragging brakes can also make that difficult. If you can get the wheel to spin free, hold one hand on a spring coil. That is where it will be most noticeable.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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OldNick
Novice
Feb 27, 2015, 1:51 PM
Post #4 of 7
(1800 views)
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Re: Puzzling wheel noise
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@discretesignals
The trouble is the sound is so quiet that, if I drive on any surface other than total smooth road, it gets swamped. But I will try the swerving idea and see what happens.
Nick
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OldNick
Novice
Feb 27, 2015, 1:55 PM
Post #5 of 7
(1798 views)
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Re: Puzzling wheel noise
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Ok, so load can make a difference. I will certainly give that tuch the springs idea a go. All makes sense.
Nick
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OldNick
Novice
Mar 5, 2015, 10:54 PM
Post #6 of 7
(1768 views)
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Re: Puzzling wheel noise
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It was the brake drum  It was a bit unfair, because when I first tried spinning the wheel, there was no noise at all. When I loosened the lugnuts there was a brake scrape, but only _once_ per wheel rev. After I took the wheel off, there was the "double tap" that I had been hearing. I can only assume that loosing the wheel allowed a tiny bit of movement in the drum.
So thanks a lot for your advice and help.
Nick
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Discretesignals
Ultimate Carjunky
/ Moderator
Mar 6, 2015, 5:11 PM
Post #7 of 7
(1756 views)
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Re: Puzzling wheel noise
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Great to read you got it solved  Closed as solved. Can be reopened upon request by the OP.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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