[m4ml]

Originally Posted by Ximian

I have the EBC 2 piece rotors (in the front only) paired with RSL29s. The slotted rotors generally wear out brake pads quicker so we'll so how these handle the track day coming up.

Super interested to hear about them. I'm thinking ahead to when my front rotors wear out what I'll replace them with. The current front runner is the Girodisc rotors, but I'd be interested to hear how the EBC rotors work out for you.

[Ximian]

Originally Posted by m4ml

Super interested to hear about them. I'm thinking ahead to when my front rotors wear out what I'll replace them with. The current front runner is the Girodisc rotors, but I'd be interested to hear how the EBC rotors work out for you.

Can't go wrong with Girodisc, their products are great. It's also nice to be able to get replacement rotor rings and hardware quickly from them.

If it's possible, I would replace the EBC rotor rings with Girodisc.

[BoilerUP]

The XP12/R12 is known to stop well...but have somewhat limited longevity.

Right now for me on the ATS-V, it looks like R16s are good for 75-100% more sessions than the R12.

[rafaeldelrey]

Being Pagid RS29 an endurance pad, wouldn't it be less effective than others? I mean, less braking power.

What do you think about EBC RP1? It's a full race pad.

[Ximian]

Originally Posted by rafaeldelrey

Being Pagid RS29 an endurance pad, wouldn't it be less effective than others? I mean, less braking power.

What do you think about EBC RP1? It's a full race pad.

Yes, the RSL29 would have less braking power than something like a CarboTech XP20/XP24, but still more braking power than the stock pads. To be fair, our stock pads are a very good hybrid (street/track) pad.

Endurance pad compounds like the RSL29 or the PFC 08 are meant to not wear quickly with quick but somewhat restrained driving.

Sprint pad compounds like the XP20/24, PFC 11, or Pagid RST pads are able to handle higher temperatures when the car is pushed to the limits for a short period of time, like a sprint race.

These are all race pads. For track driving at our level, any of these should be more than enough.

Not all brake pads in the same category are made equally. There are some sprint pads with better longevity than endurance pads and the other way around. There are also nuances for each pad compound and the application that you learn through experience. For example, the RSL29 is frequently reported to "glaze over" when it's at 50% wear and other people report that the PFC 08 is great until it's worn close to the backing plate.

[Snotdoc]

Just wanted to add my experience to this. I did a wet weekend at CMP in SC and toasted a new set of EBC blues in 2 days. I think it was the TC as mentioned. Replaced with PAgid RSL 29 for Road Atlanta this weekend and will use less TC. They seems to have markedly more stopping power than the blues as well.

[Ximian]

I ran the RSL29s over the weekend at the local track and they do have less stopping power than the stock pads. Fairly good and almost linear build up but at 100% braking, the stock pads win slightly.

Didn't really have issues getting into the ABS either with P0 tires but I've been doing this for a while so that has something to do with it.

[kolosy]

Just got back from a track day and shredded a set of stock front pads. This is a shorter, brake heavy track I’ve been having this issue with on my E90 as well, and with track pads to boot, so it’s definitely a driver issue. That said, I think I’m going to try some xp20s or maybe winmax r5s next time.

[Ximian]

Originally Posted by m4ml

Super interested to hear about them. I'm thinking ahead to when my front rotors wear out what I'll replace them with. The current front runner is the Girodisc rotors, but I'd be interested to hear how the EBC rotors work out for you.

The EBC two piece rotors worked just fine. They look huge and pretty cool.

This was an impulse buy from someone selling them with a good discount here. I prefer a single piece rotor to avoid the hassle of installing new hardware. Not many torque wrenches out there can handle 7 nm accurately.

[kolosy]

Originally Posted by Ximian

I ran the RSL29s over the weekend at the local track and they do have less stopping power than the stock pads. Fairly good and almost linear build up but at 100% braking, the stock pads win slightly.

Didn't really have issues getting into the ABS either with P0 tires but I've been doing this for a while so that has something to do with it.

So — RSL or XP20s? Figure 85% track 15% street by mileage.

[Ximian]

XP20 is my preference still.

For brake cooling, get something that replaces the rotor shield, get a long tube that attaches to it, and shove it into the brake duct. Much better than the weak clips on the Speed Engineering part.

[kolosy]

Originally Posted by Ximian

XP20 is my preference still.

For brake cooling, get something that replaces the rotor shield, get a long tube that attaches to it, and shove it into the brake duct. Much better than the weak clips on the Speed Engineering part.

what diameter hose is that? and did you find a backing plate that you like? going to be annoying to give Burkhart another 250 of my dollars

[Ximian]

Originally Posted by kolosy

what diameter hose is that? and did you find a backing plate that you like? going to be annoying to give Burkhart another 250 of my dollars

2 and 1/8" but up to 2 and 1/4" might be a more snug fit.

I have no idea about the fitment or quality, but this is a good price - https://www.ebay.com/itm/266420473694

[kolosy]

Originally Posted by Ximian

2 and 1/8" but up to 2 and 1/4" might be a more snug fit.

I have no idea about the fitment or quality, but this is a good price - https://www.ebay.com/itm/266420473694

that looks an awful lot like the aliexpress ones i bought for the e90 that didn't fit... i still have those somewhere, should try that first ...

[Snotdoc]

I had very good luck with the RSL29 at Road Atlanta last weekend. Felt good braking from 150+ into 10a.

[stormlv]

Changed to girodiscs and Endless N39s:

https://g80.bimmerpost.com/forums/sh....php?t=2107202

I'm super happy with them

[rafaeldelrey]

Originally Posted by Snotdoc

I had very good luck with the RSL29 at Road Atlanta last weekend. Felt good braking from 150+ into 10a.

Sorry for the off-topic, but what an amazing video. What outside camera was that? How and where did you attach it?

Back to topic. Have you tested stock pads at the same track? How do they compare?

[fl1by]

Originally Posted by jmg

I haven't done it yet myself on the G8X. Does it have anything to do with setting the parking brake for the rear caliper into service mode? If so, the bimmerlink app can do it without a computer. You can use the same OBD cable we use for bimmerlink. Sucks that you have to buy a separate app, but it's wasn't too expensive and you get some other nice functions out of it.

??? What pads are you running now? My dealer does fluid change for 175.00. Too easy, but then again they support me driving the M3 hard, and they are 4 miles from my house.

[Ximian]

Getting the car prepped for a tech inspection and a 3 day event next week.

The RSL29 pads leave a gap to the edge of the EBC rotor ring. The stock pads don't have such a gap from what I recall so that's something to keep in mind when I put those back on.

I also made sure my zip ties are still intact - these are to help prevent the hose from backing out of the duct. Much cheaper than the Speed Engineering replacement duct with weak tabs that break off if there is a small breeze.

[rafaeldelrey]

Just went to a track day on Sebring with my M3 CS. I had the 1200 mi break-in service done the day before, so everything is stock, including fluids. As with my wife's M4 in its first track day 100% stock too, I had no sign of brake fade. Well, maybe a slight decrease in brake efficiency at the end of sessions, after a lot of laps, but no pedal mushiness. Maybe its more related to tires getting too hot. Braking works very well, even with the high temperatures we have here in summer. A friend was running behind me and noticed black smoke get out of the wheels when I braked hard. I assume it's the M-Compound. Finished the day and I don't think the pads would last another event. The front left is almost gone, and the rear is pretty wasted. I've ordered a set of rear+front Pagid RSL29 and Motul RBF 700. This time, I'm doing the install in a shop with the right experience on race/track cars, so I hope I won't have the issues (worse than stock, fade in the first session) I had when I changed the M4 brake to Cobalt pads and Motul 600, due to air bubbles in the brake system.

I've raced with an experienced racer (my instructor) and he was very impressed with how good the stock brake is. He has a GT3 RS and a McLaren 720s. Those two have insane brakes.

[rafaeldelrey]

Originally Posted by Ximian

Getting the car prepped for a tech inspection and a 3 day event next week.

The RSL29 pads leave a gap to the edge of the EBC rotor ring. The stock pads don't have such a gap from what I recall so that's something to keep in mind when I put those back on.

I also made sure my zip ties are still intact - these are to help prevent the hose from backing out of the duct. Much cheaper than the Speed Engineering replacement duct with weak tabs that break off if there is a small breeze.

I've ordered a set of RSL29 (front and rear), and considering getting a new set of brake rotors, such as the EBC or Girodisc. I have been to too many scary situations. Could you elaborate on the gap you mentioned with the RSL29 and EBC brake rotors? Not sure if I'm getting what you mean. Are you worried it will cause an uneven shaving of the disc surface, which would be a problem when/if you reinstall stock pads? Sorry if I totally misunderstood.

[Ximian]

Originally Posted by rafaeldelrey

I've ordered a set of RSL29 (front and rear), and considering getting a new set of brake rotors, such as the EBC or Girodisc. I have been to too many scary situations. Could you elaborate on the gap you mentioned with the RSL29 and EBC brake rotors? Not sure if I'm getting what you mean. Are you worried it will cause an uneven shaving of the disc surface, which would be a problem when/if you reinstall stock pads? Sorry if I totally misunderstood.

If you look at the last picture of the rotor, there is a rusty ring on the inside area of the rotor where the Pagid pads are not making contact. I'll probably reinstall the stock rotors with stock pads, but the slight concern is that a different kind of pad might overlap with that rusted area and wear the pad unevenly. Sticking with Pagid pads would avoid this issue.

It's also possible that other pads would leave the same gap and I could be mistakenly remembering the area covered by the stock pads.