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#4711598 - 03/30/18 02:14 PM Rear bearing noise or tire noise?
callbay Offline


Registered: 05/29/05
Posts: 815
Loc: Ozark Mountains
How can one tell the difference?

It's a 2011 Ford Fusion front wheel drive with 101,000 miles on it. I have checked the tires visually and no damage.

The noise is on smooth roads and can't be heard on rough ones.

Thanks!

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#4711604 - 03/30/18 02:17 PM Re: Rear bearing noise or tire noise? [Re: callbay]
HoosierJeeper Offline


Registered: 11/23/16
Posts: 1276
Loc: WI
Swap the front/rear tires maybe...if the front ones seem quiet.
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#4711632 - 03/30/18 03:02 PM Re: Rear bearing noise or tire noise? [Re: callbay]
skyactiv Online   content


Registered: 03/02/13
Posts: 4510
Loc: The Midwest
Cross rotate them. The edge of the tread is sharper on one side. When you X rotate the tires, you flip the sharp edges around and it usually hushes down the tires for awhile. I had an older neighbor when I lived in the city which I maintained his Chevy Colorado. He complained of tire noise, I cross rotated them and he was happy as it did the trick.
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#4711648 - 03/30/18 03:24 PM Re: Rear bearing noise or tire noise? [Re: callbay]
WyrTwister Offline


Registered: 01/13/13
Posts: 1586
Loc: Texas
Almost every one runs radials now a days . Years ago I heard x rotating the radials would cause the tread to seperate .. Truth or myth ?

Thanks , :-)
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God bless

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#4711658 - 03/30/18 03:34 PM Re: Rear bearing noise or tire noise? [Re: callbay]
WyrTwister Offline


Registered: 01/13/13
Posts: 1586
Loc: Texas
Almost every one runs radials now a days . Years ago I heard x rotating the radials would cause the tread to seperate .. Truth or myth ?

Thanks , :-)
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Wyr
God bless

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#4711746 - 03/30/18 05:20 PM Re: Rear bearing noise or tire noise? [Re: callbay]
d00df00d Offline


Registered: 10/20/05
Posts: 11282
Loc: PA
Originally Posted By: callbay
How can one tell the difference?

It's a 2011 Ford Fusion front wheel drive with 101,000 miles on it. I have checked the tires visually and no damage.

The noise is on smooth roads and can't be heard on rough ones.

Thanks!

If it's a wheel bearing noise, it'll typically get louder or quieter in a turn (unless both bearings on the same axle are comparably worn).

E.g., if a wheel bearing on the right is worn, it'll make more noise in left turns (when there's more load on the right side) and less noise in right turns (when there's less load on the right side). And vice versa.
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#4711764 - 03/30/18 05:54 PM Re: Rear bearing noise or tire noise? [Re: callbay]
SubieRubyRoo Offline


Registered: 05/14/12
Posts: 1232
Loc: Winchester, Indiana
on my 2011 Fusion FWD, it was neither of these issues. It was the fact that the brake pads had not worn equally, and the inside pad had ground grooves into the rotor, but you couldn't hear any grinding. On the highway at about 75-80, it would show up as a hum/ringing noise like a bad rear wheel bearing. Replaced pads and rotors and never heard the noise again.

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#4711771 - 03/30/18 06:12 PM Re: Rear bearing noise or tire noise? [Re: callbay]
Trav Offline


Registered: 11/20/06
Posts: 19321
Loc: MA, Mittelfranken.de
If you still cant tell after rotating tires remove the rear wheels and lift the calipers off then rotate the hub by had, feel for any roughness and listen for noises. If either replace the hub unit, if not check for brake noise with the caliper in place and check the backing plate for contact.

This is from SKF and less than half the price of OE, do both on the same axle.

https://www.rockauto.com/en/moreinfo.php?pk=1842498&cc=3015243&jsn=493&jsn=493
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#4711798 - 03/30/18 07:05 PM Re: Rear bearing noise or tire noise? [Re: callbay]
Driz Offline


Registered: 09/23/07
Posts: 291
Loc: northern NY
Run down the road over 40 mph. Do the drunken swerve back and forth repeatedly. If itís a wheel bearing it will groan growl or whatever a little when you sidebload the bearing like that. Not very scientific but it has always worked for me.

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#4711913 - 03/30/18 09:42 PM Re: Rear bearing noise or tire noise? [Re: Driz]
mcwilly Offline


Registered: 07/31/17
Posts: 98
Loc: Canada
Originally Posted By: Driz
Run down the road over 40 mph. Do the drunken swerve back and forth repeatedly. If itís a wheel bearing it will groan growl or whatever a little when you sidebload the bearing like that. Not very scientific but it has always worked for me.


Yes that is how my front bearing was, going down a winding road it was off and on.
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#4711950 - 03/30/18 10:49 PM Re: Rear bearing noise or tire noise? [Re: callbay]
Warstud Online   content


Registered: 09/02/05
Posts: 5497
Loc: MIchigan
Originally Posted By: callbay
The noise is on smooth roads and can't be heard on rough ones


Sounds like a tire issue.

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#4715660 - 04/03/18 11:21 PM Re: Rear bearing noise or tire noise? [Re: callbay]
joel95ex Offline


Registered: 02/05/08
Posts: 652
Loc: texas
i never had rear bearings go bad but i had a civic with bad front bearings and the noise sounded like an airplane propeller --seriously-like the movie airplane and it kept getting louder--plus there was a bunch of dust similar to brake dust. like other said, jack it up and spin the wheel.
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