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Discussion Starter #1
As most track folks know slotted brake rotors are superior to crossed drilled. After 13 track days my factory stock rotors started to exhibit stress cracks emanating from the cross drilled holes. After quite a bit of searching I found a source for slotted rotors for the 718 S. The front rotors on the S model are 330 mm dia. x 34 mm thick, rears are 299 mm x 20 mm thick. The source is: R1 Concepts, Inc. https://www.r1concepts.com/. You may want to call first to make sure they get the right config. for you. The cost is quite a bit less than factory, $307 for a front pair and $132 for the rears with free shipping. I just ordered a full set and plan to install and run starting April 2018. It will be a bit before I'll know if these parts are acceptable for tracking, but I'll post my results during their use.
 

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I was pretty suprised the firt time i tracked my 986 way back and i had all kind of problems such as fade, squeeks and small cracks.
Then by time i learned that most Porsche people changed rotors if the tracked alot.
I havent been looking for rotors for 718 so i will keep an Eye on this thread.
 

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13 days at the track is impressive for stock brakes. I use Pelican Parts for my brake pads/rotors (on my 987). While they have a good selection of slotted rotors for various cars I don't think they have 718 parts just yet - but I would check every so often to see as I'm sure they will be added soon.
 

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Discussion Starter #4
13 days at the track is impressive for stock brakes. I use Pelican Parts for my brake pads/rotors (on my 987). While they have a good selection of slotted rotors for various cars I don't think they have 718 parts just yet - but I would check every so often to see as I'm sure they will be added soon.
I changed pads on these rotors and turned them once during 15 track days. The rotors were shot after 15 tracked days. 6 days on stock pads and 9 days on Pagid Yellows. The stock pads really aren't too bad for the cost. I didn't have any fade with them during 15 to 25 minute runs. I know another fellow running stock pads on his 718 and he is a bit faster than I am and he does very well with them also.
 

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Discussion Starter #5
Just got a call back from R1 Concepts. They say they can't do slotted rotors on my 2017 Cayman S because it is not the original configuration. They will do the cross drilled only as original config. I'm still going with them as the price is considerably less and if they last 15 track days as the original I'll be happy. Stay tuned!
 

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Discussion Starter #6
Bought a set of Ferodo DS1.11 pads from Apex Performance. They're supposed to last longer and be more rotor friendly than Pagid Yellows. We'll see!
 

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Must say I was surprised to see Porsche use cross drilled rotors. Even my humble Renaultsport Megane uses slotted rotors.
 

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Just got a call back from R1 Concepts. They say they can't do slotted rotors on my 2017 Cayman S because it is not the original configuration. They will do the cross drilled only as original config. I'm still going with them as the price is considerably less and if they last 15 track days as the original I'll be happy. Stay tuned!

I just looked at the R1 Concepts website. It looks like they now have the slotted rotors in stock.
https://www.r1concepts.com/detail_catalog/index/eLINE-Series/ref=PORSCHE+718_CAYMAN+2017+SSMCL_excluding_Carbon_Ceramic_Brake_Rotors+Front+Drilled_and_Slotted_Rotor+silver?gclid+++
 

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Discussion Starter #9
I would call them first. I saw the same thing and ordered them. Looks like all was good then they called back and said they couldn't do it. Maybe their policy has changed now.
 

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Discussion Starter #10
This season I got 11 track days with plenty of pad to spare on my 1st set of Ferrodo brake pads. They stop just as good as Pagids, last longer and are much more rotor friendly. Got them at Apex Performance. Ask for the Ferrodo brake pad discount.
 

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This season I got 11 track days with plenty of pad to spare on my 1st set of Ferrodo brake pads. They stop just as good as Pagids, last longer and are much more rotor friendly. Got them at Apex Performance. Ask for the Ferrodo brake pad discount.

Can you daily drive those pads? Or do they squeak when not up to track temps?
 

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Can you daily drive those pads? Or do they squeak when not up to track temps?
If you don't like squeaking you won't like the Ferodo pads on the street. Just imagine your driving a Skool Bus and it will be fine. ;)

Another shout out for Clark at Apex Performance. Great service and good prices.

Peter
 

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Discussion Starter #15 (Edited)
If you don't like squeaking you won't like the Ferodo pads on the street. Just imagine your driving a Skool Bus and it will be fine. ;)

Another shout out for Clark at Apex Performance. Great service and good prices.

Peter
Mine did not squeal at all after I bedded them. Very important to bed track brake pads if they require it, these do. They do make a mild grinding sound, but not a loud squeal like some other track pads do. I was able to have the rotors turned with about an average removal of 1.5 mm.
 

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Discussion Starter #16
Another point, the R1 Concepts rotors worked pretty good with the Ferodo pads. I was able to have them turned within spec. We'll see how they do with the 2nd set of Ferodo's on them.
 

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Another point, the R1 Concepts rotors worked pretty good with the Ferodo pads. I was able to have them turned within spec. We'll see how they do with the 2nd set of Ferodo's on them.
So how did the rotors hold up after all? I've eaten through my stock ones with PFC pads and I'm trying to decide if these are a viable option or if I should just get another set of stock rotors or perhaps splurge on the Girodiscs.
 

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So how did the rotors hold up after all? I've eaten through my stock ones with PFC pads and I'm trying to decide if these are a viable option or if I should just get another set of stock rotors or perhaps splurge on the Girodiscs.
I'm in the same boat as you and currently on my 3rd set of front rotors (2nd set for rear). I'm using the Pagid yellows with mine. So far it's always the cross drilled that causes cracks and forces me to swap out the rotors instead of thickness.

I did a rough calculation and it doesn't seem like girodisc is worth it. It's nearly 3x-4x the upfront cost and even the replacement rings are ~2x OEM spec rotors. Unless I'm missing something, it seems like going OEM spec always ends up cheaper. I haven't heard of people saying they 2-3x as long to justify their cost.

I'm sure they do keep the temps under control more and are "better" brakes with improved cooling and slightly less weight etc. Plus 2 piece always looks cool. I wish there was a cheaper 2 piece alternative - I'd be all over that! It's just a giant chunk of metal. The profit margin on expensive rotors must be insane.
 

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I'm in the same boat as you and currently on my 3rd set of front rotors (2nd set for rear). I'm using the Pagid yellows with mine. So far it's always the cross drilled that causes cracks and forces me to swap out the rotors instead of thickness.

I did a rough calculation and it doesn't seem like girodisc is worth it. It's nearly 3x-4x the upfront cost and even the replacement rings are ~2x OEM spec rotors. Unless I'm missing something, it seems like going OEM spec always ends up cheaper. I haven't heard of people saying they 2-3x as long to justify their cost.

I'm sure they do keep the temps under control more and are "better" brakes with improved cooling and slightly less weight etc. Plus 2 piece always looks cool. I wish there was a cheaper 2 piece alternative - I'd be all over that! It's just a giant chunk of metal. The profit margin on expensive rotors must be insane.
I don't have any empirical evidence from 718s to support this but in general with our racing programs we see significant longevity improvements with larger diameter rotors and cooling ducts. If all you care about is the cheapest solution then perhaps it's a wash but we are after longer service life with reduced maintenance intervals. Less brake bleeding, fewer pad and rotor changes lets us focus on track time.
 

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I don't have any empirical evidence from 718s to support this but in general with our racing programs we see significant longevity improvements with larger diameter rotors and cooling ducts. If all you care about is the cheapest solution then perhaps it's a wash but we are after longer service life with reduced maintenance intervals. Less brake bleeding, fewer pad and rotor changes lets us focus on track time.
You are right about that. Didn't factor the time/cost involved. I'm just doing HPDE and getting track inspections every few weeks anyways, so I'm usually at my shop regardless. The labour cost does add up having to do more brake service/maintenance.

I'm also in Canada so that does no help getting girodisc here vs oem spec in terms of cost.
 
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