# Strange humming sound

**URL:** <https://community.cartalk.com/t/strange-humming-sound/65891>\
**Category:** Maintenance/Repairs\
**Created:** [July 1, 2011, 6:01pm UTC](https://community.cartalk.com/t/strange-humming-sound/65891 "2011-07-01T18:01:37Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![beachbum516](https://avatars.discourse-cdn.com/v4/letter/b/9e8a1a/32.png) [@beachbum516](https://community.cartalk.com/u/beachbum516)\
**Post date:** [July 1, 2011, 6:01pm UTC](https://community.cartalk.com/t/strange-humming-sound/65891/1 "2011-07-01T18:01:37Z")

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I have a 2007 Ford Fusion AWD and noticed a humming noise as I was driving last night. It started when I got near 50mph and seemed to stop or get so quiet as to be not noticeable when I got to 40 or put the breaks on. Does anyone know what this might be? Thanks!

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**Author:** ![edb1961](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/edb1961/32/122_2.png) [@edb1961](https://community.cartalk.com/u/edb1961)\
**Post date:** [July 1, 2011, 6:38pm UTC](https://community.cartalk.com/t/strange-humming-sound/65891/2 "2011-07-01T18:38:19Z")

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If the pitch/volume of the noise changes when the steering wheel is turned off-center (i.e. changing lanes), one or more wheel bearings may be going bad.

Ed B.

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**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\
**Post date:** [July 1, 2011, 7:03pm UTC](https://community.cartalk.com/t/strange-humming-sound/65891/3 "2011-07-01T19:03:43Z")

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In addition to a bad wheel bearing (or two), the humming noise could be coming from the tires.  
Many tires that were previously quiet will become noisy once they have a significant amount of tread wear.