What would make front tires squeal if Alignment is good? - Chevy Impala SS Forum
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post #1 of 7 (permalink) Old 09-20-2004, 06:10 PM
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This has been annoying me for a while now and it seems to be getting "easier" to squeal the front right wheel.

My alignment checks good. Two different shops say my bushings, et al are good, my tires are good and rotating doesn't make a difference.

However, I am easily able to make the front right tire squeal when turning in a parking lot or even going around a normal street corner (right turn only).

Only thing I can think of is the HA rear bar and stock front bar are the problem (F-body bar is sitting in my garage...).

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post #2 of 7 (permalink) Old 09-20-2004, 06:35 PM
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What kind of tires do you have on the car??
post #3 of 7 (permalink) Old 09-20-2004, 06:38 PM
GM Tech
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HOW good is your alignment? The alignment can be within spec. but still exhibit undesirable behavior. What I mean is, It can be "in-spec" and drive straight down the road but, maybe one side is set to cancel out the other. OK for Mom and Pop, but not when you actually DRIVE your car!!! My guess is that you have too much positive camber and/or not enough caster on that side.
There is always the ball joints. Have they been checked?

Did/can you get a copy of your alignment sheet?
If you could post it that would help.

post #4 of 7 (permalink) Old 09-20-2004, 09:20 PM
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It means your Ackerman angle is off. That's the difference in angle between the inner and outer wheels when turning. The inner tire needs to turn sharper than the outer wheel.

This is not adjustable, it's designed into the steering geometry.

Our Tahoe does this pretty bad when turning sharp at low speeds.
post #5 of 7 (permalink) Old 09-21-2004, 07:25 AM
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I'm running 215/75-R15s since I'm lazy and haven't bothered to get new tires for my stock Imp wheels.

I guess I'll have someone else look at my ball-joints. I "think" they're ok, I can't find any of the tell-tale signs.

It might be the Ackerman angle, but if so I wonder why not everyone with "caprice" wheels has this problem.

I'm actually able to squeal the front right tire before the back tires if accelerate going through a right hand street corner. Enough to make people look at me and I'm only going 10-15.
post #6 of 7 (permalink) Old 09-23-2004, 11:32 PM
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Keep in mind that alignment is a static measurement. I suppose there are many reasons why it could be just the front right tire, but lets assume its not a bent arm. Its likely that your "dead on" alignment specs might take different caster and/or camber on the different sides to counteract crowned roads. I NEVER use different settings left and right unless I'm going around in circles on a race track. Just a though.

Right now my SS is so low with just a spring swap that it exhibits really nasty front suspension characteristics when it moves. Fortunately, the springs are so dang stiff that they rarely move [img]smile.gif[/img] I can tell the difference in hard parking lot type turns.
post #7 of 7 (permalink) Old 09-24-2004, 01:15 AM
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The lower ball joints have a tell tale that will let you know when to replace by a visual inspection. Look at the grease fitting where it is screwed into the ball joint. It is sitting on a raised boss slightly larger than the fitting.
As the ball joint wears out the boss retracts into the ball joint. if the boss is level with the surface of the ball joint its time to replace.
My time has come to replace mine, the mileage is 240 thousand and my grease jobs are kinda infrequent.
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