Mazda Talk Forums

Posted: **Wed Nov 23, 2022 9:24 am**

I purchased the GWR Big Brake Conversion for Brembo calipers for my 2021 MX-5 Club. They work great.
I have used them for 6 or so track days plus about 10k street miles. The rotors are wearing to the point that the slots are starting to disappear. Attached are a couple of photos of the worn rotor slots. What is the minimum safe operating thickness for these rotors. Is it the same as the OEM rotors?

Posted: **Wed Nov 23, 2022 9:28 am**

: PXL_20221123_162043487.jpg (2.62 MiB) Viewed 1657 times

: PXL_20221123_162036790.jpg (2.81 MiB) Viewed 1657 times

Posted: **Wed Nov 23, 2022 11:09 am**

You are just about there at replacement point, which is when the slots vanish.

Posted: **Fri Nov 25, 2022 7:31 am**

Thanks Brian. I appreciate it.

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Minimum thickness for GWR Big Brake Conversion for Brembo 16-23

Minimum thickness for GWR Big Brake Conversion for Brembo 16-23

Re: Minimum thickness for GWR Big Brake Conversion for Brembo 16-23

Re: Minimum thickness for GWR Big Brake Conversion for Brembo 16-23

Re: Minimum thickness for GWR Big Brake Conversion for Brembo 16-23