[urq] Doing the brake shake...not a dance I enjoy!

[daniel darlington]

there's a place in atlanta called Gran Turismo that
balances the tires on the car, thus balancing
everything under load.  i also had them align the car.
it helped with the shake my car had, but it returned a
few months later.  i never got around to finding the
culprit, but maybe there's a place like that in
orlando (ask a race team, that's how i found out about
GT).


--- Ingo Rautenberg <irautenberg at comcast.net> wrote:
> Hmm.  New sway bar bushings?  Are these 'new' brake
> pads?  Maybe switch the
> pads from side to side.  Since you sy the car is
> fine until you've braked a
> few times (warming things up), I would think it has
> to do with something
> that is heating up.  Even if the brake proportioning
> was messed up, it
> should not result in front-end shake, IMO.
> 
> Please do let us know what you find out.  Also, Some
> tires when they warm up
> can get out-of round -- in which case a balancing of
> the tires on one of the
> newer dynamic road load balancing machines might
> help.  This is the one
> (Made by Hunter IIRC) that runs the tire against a
> cylinder to simulate
> driving force load.
> 
> Ingo
> 
> ----- Original Message ----- 
> From: "Justin Riley" <jriley at ctiusa.com>
> To: "Ingo Rautenberg" <i.rautenberg at waratap.com>;
> <urq at audifans.com>
> Sent: Tuesday, May 03, 2005 7:56 PM
> Subject: RE: [urq] Doing the brake shake...not a
> dance I enjoy!
> 
> 
> Additional info:
> 
> Brakes bled by Bentley procedure.  New strut
> inserts, bearings in
> February...pre Steamboat, no ill affects from
> Steamboat on return drive
> to Orlando, or for several weeks after..
> 
> 
> 
> -----Original Message-----
> From: Ingo Rautenberg
> [mailto:i.rautenberg at waratap.com]
> Sent: Tuesday, May 03, 2005 10:49 AM
> To: Justin Riley; urq at audifans.com
> Subject: Re: [urq] Doing the brake shake...not a
> dance I enjoy!
> 
> Justin,
> 
> OK, then! The fact that this only happens once
> you've heated up the
> brakes
> makes me think you're on the right track.  Suggest a
> brake bleed while
> you're at it and check to see if one wheel is
> appreciably warmer than
> the
> other (sticky caliper when warm syndrome).
> 
> Other things you may want to check:
> First.  Either swap the tires front to rear to rule
> wheels/tires out.
> Second:  Check for wheel beearing play -- if you've
> got a lot of free
> play,
> it may not be noisy, but may give you that symptom
> when braking.
> Third:  I know you hate to hear this -- replace
> front strut bearings.
> Fourth:  Worn strut inserts
> 
> At least those would be the areas I'd be looking at.
> 
> HTH
> 
> Ingo
> 
> 
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daniel a. darlington




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