Harmonic hum in turns
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Cruiser
Joined: Jun 2009
Posts: 132
Likes: 0
From: Silicon Valley, Ca
Harmonic hum in turns
2011 SG with stock tires, 8K on them. When I turn at speeds over 35 or so I hear a hum, sounds like when you blow across a beer bottle top-kind of a "whoooooooooooooo". No noise going straight. Just started about 1K ago, tried neutral, clutch in etc. and it still sings. Tires?Bearings?Brakes? Anyone have the same thing going on? Thx.
Outstanding HDF Member
Joined: Jan 2010
Posts: 2,916
Likes: 31
From: earth
I've always thought it was from the contact patch shifting into the unworn section of the tread when leaning into turns, mines always done it too. Its one of those things that can catch your attention or go unnoticed for years.
Road Captain
Joined: May 2011
Posts: 745
Likes: 0
From: Sacramento
yep...mine started bout the same mileage & its worse on left turns than right ones. if you look at the rear tire from on the sides you will notice there starting to cup & that is what you hear hitting the ground.
you should be fine till you run it down.
i got almost 13k on it now & no drive ability issues.
i think its from hard acceleration in corners...
you should be fine till you run it down.
i got almost 13k on it now & no drive ability issues.
i think its from hard acceleration in corners...
Road Master
Joined: Jun 2012
Posts: 910
Likes: 7
From: Shaconage
Tire cupping... I've always described it as corner roar. I've experienced it on several bikes. Mainly the ones I don't keep up with proper inflation. I seem to start all my new tires with good intentions, but eventually laziness always seems to prevail.
Seasoned HDF Member
Joined: Sep 2007
Posts: 9,741
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From: Danbury CT
I don't have it on my 06 and didn't have it on the 09 Heritage until I replaced the stock dunlops with metzler me880's. The metz's hum when not going straight. It's very loud when riding next to a parkway solid center divider. And I don't have any cupping.
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Tourer
Joined: Nov 2009
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From: New Smyrna Beach, Fl.
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Stellar HDF Member
Joined: Dec 2005
Posts: 2,598
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From: South Jersey
I also have a '06 and recently replaced my front tire with a 880 Metzler Marathon and am experiencing the same thing. Had the front bearings checked and they were OK so it must be the tire.
Seasoned HDF Member
Joined: Sep 2007
Posts: 9,741
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From: Danbury CT
Mine are Marathons too. The noise sucks until you realize its the tires and not bearings or a misaligned belt.