mdrums

Rick I wish you made these 1 piece rotors for 2005-2010 Carrera S cars. I have a 2009 Carrera S.

analogmike

There's an article in the SCCA Sports Car magazine this month about brakes. It confirms what I have thought for a long time, that cross-drilled rotors are only good for the disco clubbing bling set, now that the brake pads are better and don't have the gassing problems. When will Porsche learn?

mdrums

Yep...I can't stand my stock rotors...but can't afford the $2500 for 2 Girodisc slotted either. so.....

I noticed on the Panamera Porsche is useing slotted rotors...wish they would wake up for the other cars!

RJFabCab

The funny thing is that some PCA events will flunk you at tech for rotors that look like that.

mglobe

All due respect to those who are commenting that those rotors have plenty of life left on them, but I wonder what is the basis for that assertion? I just replaced a set of slotted rotors that looked very similar to Tom's. (different brand fwiw). I looked at them, and couldn't help but worry that the things were going to fail on me in a catastrophic way while on the track. Do we have data from destructive testing that tells us when we need to replace rotors?

TRAKCAR

+1, I got easy 30 days out of the fronts and relaced because I replace them once a year..
I have only 4 days on the OEM '10 rotors and they are holding up better then the '07 rotors, but still like slotted better..

Rick DeMan

I can only speak from experience with regard to this situation, we've been using the rotors in question for over 3 years with tremendous success. The pictures given on this thread of the actual rotors in question do not have any cracks looking like trouble. We've not yet had to replace a set of DeMan rotors from cracking failure, and by all accounts last way beyond most users "comfort" level of time on the car.

So, from the pictures given I would say there is plenty of time left on the rotors.

AS with all RACE/DE equipment you are using on the race track, it is HIGHLY RECCOMENDED that you very carefully inspect your equipment including rotors EVERYTIME you consider going on track. If you do not know when time is up based on your own inspection, then please get some "PROFESSIONAL" advice as to the condition.

I would offer that current and past users of the DeMan Motorsport GT3 rotors would be the best judge of longevity based on personal experience.

Thanks for all your time..

Rick DeMan

John H

38D, nice avatar, although i was kinda partial to the old one. ( . ) ( . )

jerome951

Many of us run rotors that look that bad or worse and they don't explode. That's the best real-world data you can get.

While I'm not sure if they have 'plenty of life left' (which is relative to the rotor, pad, cooling, and wear rate), I think few would toss them in this condition.