[s-cars] BB Upgrade - rotor question

[Wylie Bean]

I don't think any rotor is 30mm thick... Even vented ones. 

Wylie Bean (via blackberry)
90 cq
91 90q20v
92 UrS4
01 allroad

-----Original Message-----
From: Mike Fitton <rfitton at vt.edu>

Date: Sun, 07 Dec 2008 13:26:20 
To: Tony Curran<tony.curran at sympatico.ca>
Cc: S-Car-List at Audifans.Com<s-car-list at audifans.com>
Subject: Re: [s-cars] BB Upgrade - rotor question


30 is the width of the friction surface in millimetres.  I'm not sure 
what to make of your caliper being too small.  Maybe suggest a test fit 
just to see what's up.  As for the calipers...they're from a 92-95 
928GTS?  I'm not sure what the older S4 and stuff had for brakes.

I'm using plain rotors and no problems stopping my car.  I think it's 
more about the pad for general purposes.  <insert usual shameless Ferodo 
plug here>

-Cheers!
Mike

Tony Curran wrote:
> Hi folks, I'm accumulating the parts for a spring upgrade to Big Blacks.
> Just received a used pair of 993 calipers and was doing a bit of cleaning
> when it occurred to me the space for the rotor didn't quite appear to be
> 30mm wide - measures just a tad over 28mm.
>  
> So, when the dimension of the A8 rotor 4D0 615 301 J is spec'd as 323x30,
> just exactly what is the 30?
>  
> I'm planning on using plain A8 rotors (no slots or holes & $95) any thoughts
> on pros/cons? (I don't plan to track car).
>  
> Thanks
>  
> Tony
> 96 S6
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