disk wear?

[William Teasley]

 Bill,

I recently took some measurements of EBC rotors I had installed back in
2021.  The rotors, new, were 4.8 mm.  After about 15,000 miles, that
thickness had decreased to 4.7 and 4.35 mm for either rotor.  I'm not sure
why the difference between the rotors in my case, but I suppose you can
average them to get a sense of average wear (~ 0.3 mm / 15,000 miles).

So, based on that, I think the wear in your case is reasonable.

cheers,
-Fred

On Sat, Jul 10, 2021 at 3:49 PM Bill <bachman.bill at gmail.com> wrote:

> Hi All,
>
> I have an `88 R100 with dual front disks and gave the brakes a safety
> check today.
>
> Pads were fine but the disks were under spec, 3.7mm.  Clymer says they
> should not be less than 4mm.
>
> My questions are:
>
> 1. Does that sound like normal wear for 43k miles?  (I know "depends",
> but generally?)
>
> 2. What is the thickness of a new replacement disk?  (just curious,
> outer edge of old disk reads 4.2mm)
>
> 3.  How soon should I plan on replacing the disks?  (and I assume new
> pads at same time.)
>
> thanks,
>
> Bill Bachman
>
>
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