boldstep

This is the front rotor finish. Rear finish looks near perfect. My mechanic says the front rotor condition is due to "stop and go use versus track use". Not sure how he came to that conclusion or if that's valid. I would basically would like to know how much life is in them.

Thanks!

ilko

They look fairly worn but not nearing the end of their life. How many miles do you have on them? Any track use?

khooni

looks ok to me. just a little chipping around the edge.

boldstep

35k. No significant track use

Gadsby

Looks fair, when it starts to have patches look at changing them.

you can see it on my fronts when I pulled them!

Spyerx

Can you post a picture further back with pictures of the 3 circle wear indicators?

jwalton

The best way to know if pccb are done is by Weight. There should be a minimum weight stamped into the hat. When you fall below that number start looking for a replacement and cease excess use in harsh conditions until they are changed

Gadsby

my pics are 3 years old. Rotors are stored now, don't even remember the dots

Spyerx

Sorry the OP.

this thread has good pics:

https://rennlist.com/forums/997-gt2-...-die-pics.html

When those 3 circles are 'rough' you are done with the rotors. The 991 rotors need to be inspected with a tool that measures the density of the rotor. No other way/visual to tell.