Believe it or not - there are cars out there that have an integral rotor
& hub. No actual hat. On the type that you describe, Uneven compression
of the hat between wheel & hub can distort the rotor enough to cause
increased lateral runout. Here is some interesting reading;
http://members.aol.com/carleyware/library/procut02.htm
Dave Russell
Mark Andy wrote:
> Howdy,
>
> 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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