I’ve found the secret sauce (track pads)

[Mbar]

What set up do they run at Spring Mountain, EOM?

The instructor told me they run everything OEM with track alignment.
But, remember - Sprint Mountain is a ‘low’ speed technical track that isn’t so hard on brakes.

 

[jodakid69]

Once again, Mbar is spot on - "Spring Mountain is a ‘low’ speed technical track that isn’t so hard on brakes". Likely easier on brakes as well.

I checked my videos from SpringMountain (5 days total over 2 schools and a V-CLUB session). On the East track, I hit a max speed of 127MPH in a CT5V-BW (Oct 2022). The instructor reference lap also hits a max 127MPH but, beat my time by 10 sec. The instructor is obviously a better driver - slow in/carry speed/fast out. There is a bowl on the East track and 1 sweeper left turn on the North track but otherwise, I do not recall a lot of high speed / high G turns that would grind down tires. In the North track, I hit 107MPH in a CT4V-BW (May 2023).

In contrast to Spring Mountain, I have been routinely braking with my CT4V-BW from 130+MPH @ NJMP and from 138-140MPH @ Pocono. I expect to hit 140+ at VIR this weekend.

 

[hrdboiled]

I think I found the right part number for the rear !

DP81140.14SR11​

Any update on this part#?

 

[PL69]

Any update on this part#?

Still waiting to receive the pads, they come from Europe that seller says.

 

[poor-sha]

I posted this in another thread but figured more folks would find it useful here. I was chatting with someone who is campaigning a 4BW in SCCA this year. He is running the stock brakes with Hawk DTC80 front and DTC70 rears and says they are very good. He also said the Pagid RS29S worked well, but couldn't remember what compound they ran on the rear with those. As another data point, they just replaced the rotors that came on the car after 6 track weekends.

I'll add the caveat that this is a gutted and caged car on Hoosiers, so there is a bit less weight and more grip.

 

[Neebs]

Resurrecting this thread.

Any updates on rear pad fitment issues? Looks like its not easy to source these EBC pads.

What are other good alternatives? Trying to find a track pad that will do the job on the street as well (ok with some extra rotor wear).

 

[PL69]

Resurrecting this thread.

Any updates on rear pad fitment issues? Looks like its not easy to source these EBC pads.

What are other good alternatives? Trying to find a track pad that will do the job on the street as well (ok with some extra rotor wear).

I have them on the shelf (only installed the fronts during my last track day) the car is in storage for winter season so I will only test the fitment next spring.

 

[Neebs]

Stock pads on rear? Was car stopping well? Didn't throw off brake by wire system? My front pads lasted 2 track days (intermediate to advanced level), so stock fronts is not an option...

 

[PL69]

Stock pads on rear? Was car stopping well? Didn't throw off brake by wire system? My front pads lasted 2 track days (intermediate to advanced level), so stock fronts is not an option...

OEM pads lasted 3.5 track days at the front for me but we're almost down to the metal, I installed EBC SR11 and saw a significant difference in performance and confidence, I did not install the rear since the OEM had plenty of life left in them. I saw no problem with the brake system, the SR11 pads have a lot more initial bite but this could also be aggravated by the dead OEM pads vs new ones. The EBC SR11 series are supposed to last 2-3 times longer than comparable track pads because they are sinthered pads, they do produce some sort of ssshhhhh sound on the street and are pretty graby but this isn't my daily and this is still a lot less annoying vs pads that squeek like a garbage truck.

 

[Neebs]

Great feedback. I might go same route actually - leave oem rears and get SR11 fronts. It is my daily but i don't drive much (5k miles/yr).

 

[strohw]

Great feedback. I might go same route actually - leave oem rears and get SR11 fronts. It is my daily but i don't drive much (5k miles/yr).

Hit me up. I have a front set of these pads you can have for cheap. They only had half a track day and less than 2k street miles.

 

[Mircrowaved_Bananas]

Reviving this thread with another positive track experience with the EBC SR11s. This is my second season tracking the 4BW and so far my experience with the stock pads is that they like to wear quickly when tracking. The original set of front pads lasted about 4 days for me (nearly down to metal) and produced a vibration under braking on the 3rd day. I replaced the front pads only after those 4 days and the vibration went away for a few sessions after I bedded them in but then eventually came back. I used those for 2 days to finish last season. I had not installed the extra brake cooling for any event last year so I thought that maybe that was the cause of the poor life and vibration. I left things as they were and just dealt with the vibration under braking on the street for a little bit until I put the car into storage for winter.

For this track season, I installed the extra cooling and replaced the front rotors and front and rear pads with stock items. My first event was 3 days at Pitt Race. To my dismay I found that the pads had basicaly the same life as before and I still was experiencing vibration under braking about halfway through day 2.

Based on the reviews from this thread and other forums, I decided to try out the SR11s on the front only to see if they would last longer as well as fix my vibration under braking issue. I had my second event at Mid Ohio this past weekend (2 days) and I can say that I am very pleased with the performance of the SR11s. I have not yet done any measurements on the pad thickness or rotor thickness but to the naked eye they look the way they did before the event. Braking performance was also spectacular, very confidence inspiring. I also found modulating the pedal was a bit more intuitive vs the stock pads.

What is interesting is that the vibration under braking has not completely vanished, but I think that it's now the rears causing the vibration. The vibration was hellacious immediately after installing the SR22s on the front, but after the first two sessions it reduced dramatic but did not dissapear. Before I could feel the vibration strongly through the steering wheel. After the event, it no longer does, rather I feel it through the chassis. So on that note, PL69, have you tried out the rear pads yet? I am certainly interested in running them for my next event.

I have them on the shelf (only installed the fronts during my last track day) the car is in storage for winter season so I will only test the fitment next spring.

 

[PL69]

Reviving this thread with another positive track experience with the EBC SR11s. This is my second season tracking the 4BW and so far my experience with the stock pads is that they like to wear quickly when tracking. The original set of front pads lasted about 4 days for me (nearly down to metal) and produced a vibration under braking on the 3rd day. I replaced the front pads only after those 4 days and the vibration went away for a few sessions after I bedded them in but then eventually came back. I used those for 2 days to finish last season. I had not installed the extra brake cooling for any event last year so I thought that maybe that was the cause of the poor life and vibration. I left things as they were and just dealt with the vibration under braking on the street for a little bit until I put the car into storage for winter.

For this track season, I installed the extra cooling and replaced the front rotors and front and rear pads with stock items. My first event was 3 days at Pitt Race. To my dismay I found that the pads had basicaly the same life as before and I still was experiencing vibration under braking about halfway through day 2.

Based on the reviews from this thread and other forums, I decided to try out the SR11s on the front only to see if they would last longer as well as fix my vibration under braking issue. I had my second event at Mid Ohio this past weekend (2 days) and I can say that I am very pleased with the performance of the SR11s. I have not yet done any measurements on the pad thickness or rotor thickness but to the naked eye they look the way they did before the event. Braking performance was also spectacular, very confidence inspiring. I also found modulating the pedal was a bit more intuitive vs the stock pads.

What is interesting is that the vibration under braking has not completely vanished, but I think that it's now the rears causing the vibration. The vibration was hellacious immediately after installing the SR22s on the front, but after the first two sessions it reduced dramatic but did not dissapear. Before I could feel the vibration strongly through the steering wheel. After the event, it no longer does, rather I feel it through the chassis. So on that note, PL69, have you tried out the rear pads yet? I am certainly interested in running them for my next event.

Hi,

I sold my V and got back into Porsches at the begining of this year so I never installed the rears but I think your conclusion makes sense. I still have the rears new in the box + fronts with 1 track day on them for sale if your interested.

 

[DCV]

Same here. Just traded the V for a 991.1 C4S yesterday. 2014 with just 22k miles and it’s a manual. It’s like brand new

 

[PL69]

Same here. Just traded the V for a 991.1 C4S yesterday. 2014 with just 22k miles and it’s a manual. It’s like brand new

Nice find ! I think the naturally aspirated 991.1 are underappreciated right now, the 991.2 turbo engines will eventually be more $ and trouble to keep running later on.

Since I track a lot I bought a 2020 GT4, with a few suspension mods and a good alignment it's a dream to drive on the track !

 

[DCV]

Yes I had a 991.2…..boring as hell engine.

 

[Mircrowaved_Bananas]

I ordered a set of the DP81140.14SR11 from ECS (who now have a lifetime replacement replacement program like FCP Euro) and was able to test their fitment today. I can confirm that this is the part number you want for the rear pads. The only thing I ran into was that the backing plates were slightly too large out of the box, which prevented them from sliding in easily. I think they must've been too large by a couple thousandths of an inch. A little bit of grinding later and they fit perfectly.

They showed up just in time for Watkins Glen next weekend, so I'm excited to see how they perform.