Author Topic: Tires squeal when I turn  (Read 1958 times)

Offline sprinter

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Tires squeal when I turn
« on: July 27, 2005, 03:11:48 pm »
Lately I noticed that doing tight turns causes my tires to squeal on pavement.  Anything to worry about?  I had my Upper & lower ball joints, idler arm, pitman arm replaced about 6 months ago.
"For every descent, I make 1 ascent."

Offline mrthompson

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Tires squeal when I turn
« Reply #1 on: July 27, 2005, 03:18:26 pm »
Is it hot where you live?  Have you rotated the tires lately?  Are the front tires worn?

Offline sprinter

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Tires squeal when I turn
« Reply #2 on: July 27, 2005, 03:21:19 pm »
Yeah Toronto has been hot lately.  I've put in 60K since the tires were installed and I think they are still ok.  I rotated it last fall.

Offline mrthompson

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Tires squeal when I turn
« Reply #3 on: July 27, 2005, 03:22:06 pm »
IIRC, most recommend that tires be rotated every 10K.  

Offline sprinter

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Tires squeal when I turn
« Reply #4 on: July 27, 2005, 03:45:48 pm »
Thanks but its less than 5k since I rotated them.

Mdxtasy

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Tires squeal when I turn
« Reply #5 on: July 27, 2005, 03:48:49 pm »
Are you just turning too sharply too fast?

Offline mrthompson

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Tires squeal when I turn
« Reply #6 on: July 27, 2005, 03:49:11 pm »
Oh...okey doke.  What is the year, make and model of vehicle? (Dodge Sprinter, by chance?)  Front shocks/struts good?

Offline sprinter

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Tires squeal when I turn
« Reply #7 on: July 27, 2005, 03:50:19 pm »
No, it starts just when I begin to drive out of a parking slot and stops when I stop turning.

Offline mrthompson

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Tires squeal when I turn
« Reply #8 on: July 27, 2005, 03:55:02 pm »
Size, brand, and model of tire?



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Offline sprinter

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Tires squeal when I turn
« Reply #9 on: July 27, 2005, 03:55:32 pm »
It's a chevy blazer 2000.  did some repair last Feb.  I had my Upper & lower ball joints, idler arm, pitman arm replaced about 6 months ago.  I hear a metal to metal "impact" when I hit a pothole.  The shop says it's too minor to worry about at this point.

Offline sprinter

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Tires squeal when I turn
« Reply #10 on: July 27, 2005, 03:56:57 pm »
brand, size, etc.  now I am stumped....:-)  I'll have to check that when I get home.

Offline mrthompson

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Tires squeal when I turn
« Reply #11 on: July 27, 2005, 03:57:01 pm »
" I hear a metal to metal "impact" when I hit a pothole. The shop says it's too minor to worry about at this point.

I'd be getting a 2nd opinion, if I were you.

Offline sprinter

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Tires squeal when I turn
« Reply #12 on: July 27, 2005, 04:03:55 pm »
Tires are Laredo.

Mdxtasy

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Tires squeal when I turn
« Reply #13 on: July 27, 2005, 05:11:42 pm »
Metal to metal contact is never good.

Offline capriracer

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Tires squeal when I turn
« Reply #14 on: July 27, 2005, 06:12:13 pm »
What you are expeiencing is the effect of Ackerman.  Akerman is sometimes called "toe change in turns".

When you turn the steering wheel, the front tires don't turn at the same angle.  Assuming the tires didn't slip, the innermost tire would need to be at a sharper angle than the outermost tire and the amount could be defined for every given steering input.  

However, since tires need to develop a slip angle in order to generate the side forces to turn the mass of the vehicle, there isn't a specific steering geometry that can account for all of the possible combinations of steering input and speed.  The best you can hope for is a good compromise.

So guess where the compromise is the worst?  Right! At extreme steering inputs, which is what we do when we park.  

I would, however, be absolutely sure the alignment is correct.  If the toe is even a bit off the nominal value, you can get this.

Hope this helps.

Offline sprinter

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Tires squeal when I turn
« Reply #15 on: July 28, 2005, 09:47:00 am »
Thanks for the enlightening explanation.  It makes a lot of sense but nevertheless I will have the alignment checked when I bring it in for the suspension checkup.

Offline morty

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Tires squeal when I turn
« Reply #16 on: July 30, 2005, 01:44:59 am »
Capriracer gives a great explanation. Alignment and check you air pressure.



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