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Old 04-15-10, 08:24 PM   #1
zzzzz
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MTB conering sound

Hi all

I changed my front tyres about 2 months ago and I noticed that it now screeches / squeal when I do a turn. I had initially attributed it to being new but its still there all these while. I had changed the front from a mixed road tyre to a smoother road tyre. The previous tyre which was quite new when I removed them didnt have a high pitch sound when I turn.

Is this a sign that the limit is reached and its going to skid or are these just because its still quite new or some tyres are just like that? what are your views?

thanks
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Old 04-15-10, 09:01 PM   #2
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Hard to tell without hearing the sound.
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Old 04-16-10, 08:09 AM   #3
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Are you sure the wheels are seated correctly in the dropouts? Maybe its slightly askew and the brake pad is rubbing on the rim when turning.
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Old 04-16-10, 02:38 PM   #4
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Hi

it sounds like how some car would when taking a little sharp corner.

Its not the pads because its on disc.The sound comes from the tires contacting the floor.
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Old 04-16-10, 08:19 PM   #5
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FYI that happens on a disk brake more so than the rim brake. Try releasing your skewer and making sure the wheel is sitting evenly in the drop out. After that spin your wheel freely while holding the front up and look to see if the disk is rubbing. A slight rub is okay, over time it will decrease. Keep in mind that rotors are not all perfectly flat. When the disk is hot and you are in a turn, that pad that touches the disk will squeal or howl. Mine howl as the brakes are applied when they are hot and I'm going downhill.
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Old 04-16-10, 08:22 PM   #6
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Hi

it sounds like how some car would when taking a little sharp corner.

Its not the pads because its on disc.The sound comes from the tires contacting the floor.

If you really want to find out if it's due to the new tires put the old tire back on and see if it still does it.
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Old 04-19-10, 05:08 AM   #7
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Could it be the new tyre fouling something on the turn - mis-positioned cable etc?
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Old 04-20-10, 04:23 AM   #8
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hi

I have tried to replace with the older tyre ( a few months old only) and theres no sound. Im certain is from the tyres and theres nothing there to rub it. It happens on faster and steeper turns only and not on each and every turn. Its unlikely to be heat in my case because its the first corner out of my apartment's compound.

I am worried that it might be caused by the lack of traction and that its a slipping sound I am hearing. By the way, its on dry ground when it happens. Its a little similiar to the sound of a new clean tyre on clean ceramic tiles except that my tyre is already two months old and have been in the rain a couple of times.

thanks for all the help. appreciate them
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Old 04-20-10, 10:03 PM   #9
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Could the tire be too wide for the frame and rubbing the chainstays near the bottom bracket?

:)ensen.
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Old 04-22-10, 05:08 PM   #10
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maybe i underestimate physics or something but you must really be nailing those turns if that sound is tire screeching on pavement. have you tried different surfaces? ie the sound should be different if you are on a gray concrete sidewalk or black asphalt, in my neck of the woods there are a lot of neighborhoods where they started a huge construction project but then were halted due to the economy, so you have 16 blocks of cul de sacs and sidewalks and driveways and fields and new asphalt roads with no traffic whatsoever, a place like that would be good to try to compare turning sounds.

if you can find an area of hardpack dirt and it still makes that sound on that surface then it most definitely is not the tire. if the sound does not happen, or possibly at least if it is different on asphalt vs concrete then its possible it is the tire.
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