[s-cars] Pad wear - Porsche calipers

[Theodore Chen]

Rotor centering shouldn t matter, as the pistons should float to track the rotor unless they re bottomed out or the piston seals (not the dust boots) are sticking.  The pads are different, only because of the chamfering at the edge to prevent squealing.  You can just grind/file a chamfer when swapping the pads.  Wear a mask!

When you do this, make sure the pistons are able to move (not seized), and also check the tube that connects the inner fluid reservoir to the outer.  If this tube is crimped or blocked, the outer pistons won t get full line pressure.

On Mon Mar 29th, 2010 7:58 AM PDT Taka Mizutani wrote:

>Yes, unfortunately- I had a similar issue with my 996 caliper upgrade on my
>former 200.
>
>I can't explain why- it definitely is unusual for a fixed caliper to wear
>like that. I don't think you can swap inner and outer- the pads are slightly
>different.
>
>It could be that the brackets don't center the caliper on the rotor?
>
>Taka
>
>
>On Mon, Mar 29, 2010 at 10:28 AM, Lee Levitt <lee at wheelman.com> wrote:
>
>>
>>
>> I was doing my twice yearly summer/winter tire changeover
>> yesterday and noticed that on my C5 A6, the inner pads on my front
>> brakes are substantially more worn than the outer.
>>
>> IIRC, the pads are either Hawk or Pagid, the calipers are
>> Boxsters, and the brackets are an unbranded steel product.
>>
>> Has anybody else seen this kind of uneven wear with Porsche brake
>> upgrades? A buddy in the Porsche community thought that this was
>> unusual for the Porsche brakes.
>>
>> And a related question -- should I just swap the inner/outer pads
>> to even out the wear, or do I need to source/install new pads?
>>
>> I'll be taking a look at my A4 to see how the pads on those
>> calipers (Boxster S) are wearing.
>>
>> Thanks!
>>
>> Lee
>>
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