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Re: Disk brake problem - long and boring !!

To: shop-talk@autox.team.net
Subject: Re: Disk brake problem - long and boring !!
From: Mark Andy <mark@sccaprepared.com>
Date: Fri, 27 Feb 2004 17:38:01 -0500 (EST)
Howdy,

On Fri, 27 Feb 2004, Dave & Marlene wrote:
> Note the qualifier in the statement. Actually a big IF on a lot of 
> street driven cars. A more likely cause of warped rotors, other than 
> braking too hard, is  over torquing or uneven torquing the wheel studs. 
> Carelessly running the lug nuts on with an big air wrench is a common 
> cause of warped rotors. I only go to tire shops that use a torque wrench 
> to tighten the lug nuts.
> 
> Obviously some rotors are designed stronger than others & maybe can 
> stand this abuse. Others can't.

I've never understood this, particularly with a rotor on hat design like 
many cars have these days where the rotor is slipped over the lug studs 
and is sandwiched between the wheel and hub.

How does uneven or over torquing cause rotors to warp?

Mark






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