2003 cb919 front noise - Wrist Twisters
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post #1 of 10 Old 07-08-2018, 04:18 AM Thread Starter
Tirone
 
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2003 cb919 front noise

Hey guys i just hot my first bike a month ago, its a 2003 cb919 with 19000 miles. Ive drove it for around 1500 miles and i have noticed a very annoying front howl between 25 and 40mph. I have a front michelin pilot road 3 that is almost due for change. Could this be the noise?

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post #2 of 10 Old 07-08-2018, 01:30 PM Thread Starter
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Anybody have any idea?

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post #3 of 10 Old 07-08-2018, 01:51 PM
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Hello and welcome!

I'm on my second set of PR3's, no howl from them ever... Might want to look at bearings?

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post #4 of 10 Old 07-09-2018, 07:00 AM Thread Starter
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I lifted rhw front end and no beearing play and after a long ride i put my hand where the bearing is and no heat at all, i did notice however that my tire seems to have worn unevenly like minor bumps in the rubber. Im pretty much on the wear bars

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post #5 of 10 Old 07-09-2018, 09:27 AM
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Quote:
Originally Posted by Nikolav1990 View Post
I lifted rhw front end and no beearing play and after a long ride i put my hand where the bearing is and no heat at all, i did notice however that my tire seems to have worn unevenly like minor bumps in the rubber. Im pretty much on the wear bars
Can you look at the date code on the tires? It's a four digit code. I think it's WWYY (Week Year).

What you see is probably cupping. It seems common and it could cause noise, but I'm not sure.

Several things to check: Air pressure, fork oil, disk brake temp, alignment with rear...

The disk brake temp is tricky, you want to see if it's rubbing. If you can lift the front, check the number of spins you can get by hand. Maybe 3 is a good number of spins by hand, IDK? The head bearings should be checked as well.


I'm a big fan of NOT replacing the tire until you've done the fork oil and checked all the bearings. I wouldn't want to get a bad wear pattern on a new tire.

Tires over 3 years are near the limit, 5 is general the max the you should be running. So the date code on the tire should be XX13, XX15, etc...

BTW, when you get a new tire, inquire about the date code, might as will insist on one made this year.

Given that the 919 uses a very common size, it shouldn't be hard to get fresh tires.
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post #6 of 10 Old 07-11-2018, 09:23 AM
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I have the exact same issue on my bike. Pilot Road 3 tire that is almost due for a change. I hear this howling between 25 and 40mph too.

I'm sure it's due to tire cupping.

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post #7 of 10 Old 07-11-2018, 09:41 AM Thread Starter
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Changed my tire and it was the tire that was causing that sound

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post #8 of 10 Old 07-11-2018, 04:00 PM
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Quote:
Originally Posted by Nikolav1990 View Post
Changed my tire and it was the tire that was causing that sound
Just curious, was it the tyre, or that the tyre was worn?

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post #9 of 10 Old 07-12-2018, 02:17 AM Thread Starter
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By the way i asked the mechanic to inspect and he sais everything was in good order and that he often sees michelin pilot road 4s out of round when they get worn out

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post #10 of 10 Old 07-12-2018, 02:18 AM Thread Starter
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The tire was worn unevenly

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