Kugley

I switched from OEM rotors to Girodisc on my 997.1 at the end of the year last year because I wanted something that would hold up better with PFC08's. I just finished my 16th day on them, and I'm not exactly easy on brakes either. I'm impressed they have lasted as long as they have. I'm going to order new ones but have another track day coming up in a couple weeks and am traveling in between and don't have time to change them out.
Obviously there are a lot of cracks and the vanes are almost flush. The cracks are not extending out to the end of the rotors. Do these look like I can squeeze another day out of them?

Spyerx

I wouldn't

ilko

From the picture it appears they are worn almost to the bottom of the slots. If that's the case I'd replace them prior to your next track day...

ELange0322

Agreed - you should get those changed.

CosmosMpower

Cracks are nothing but slots might be gone. Measure the thickness and compare to min. How's the brake feel, distance, overall performance?

MC 968CS

Exactly...get the thickness...though slots are disappearing so its very very likely they need changing before any more tracks days. Id change them.

Kugley

Thanks for the responses. I was at THill Sat and Sun, and the brakes stiff felt great. I'll go with the consensus and change them out. As I mentioned before, the Girodisc was a big improvement over the OEM, and I'll never complain about getting 16 hard days out of them. As for as pads, is the PFC08 still a good option? I know they are hard on rotors but really like the way they feel.

oldskews4

Try Ferodo DS1.11. Initial bite is not quite as strong as 08's, but modulation is superb. Release is clean and crisp. Not to mention, they are much easier on rotors.

993GT

replace...and the PFC's are awesome pads

modoz61

+1

TrackDays247.com

I think if you measure them you'd be at min thickness anyway, time to replace. We do have the rings and no charge hardware packs to ship to you. And of course 08s, 29s or Ferodo pads as well.

surlynkid

When you can notice the slots wearing away, you are at min thickness. That's my way of knowing.