Stock brakes are fantastic at Track, just need cooling ducts.

[TexasEmThree]

I’m happy to reach out to them if there is enough interest. I checked on the pricing on the site for shipping 1 vs 5 and there is no discount on shipping….

[Redd]

Originally Posted by derbo

I've seen this product and interested in it but doesn't seem like anyone rocks it here.

https://laptorr.com/collections/m/pr.../under-spoiler

Very interesting! Trust the Japanese to come up with some cool bits like this. The Assist Laptorr E92 M3 used to be a regular on Best Motoring so it should be a decent product. Pity about the shipping though.

[TexasEmThree]

I just reached out to the company, will keep y’all posted on their response.

[derbo]

Originally Posted by Redd

Very interesting! Trust the Japanese to come up with some cool bits like this. The Assist Laptorr E92 M3 used to be a regular on Best Motoring so it should be a decent product. Pity about the shipping though.

When I first read about Laptor a few years ago, it took me to realized Assist and Laptorr was the same company.

[TexasEmThree]

Looks like you’d need the front lip to connect the undertray to:
https://www.m3post.com/forums/showthread.php?t=413165

[derbo]

Originally Posted by TexasEmThree

Looks like you’d need the front lip to connect the undertray to:
https://www.m3post.com/forums/showthread.php?t=413165

dang bummer! But it does make sense based on how flat the ducts look like.

Originally Posted by Ryan@IND

here are some detailed pics of the lip.







more details of the under panel with vents and cooling ducts

[TexasEmThree]

Heard back from Laptorr, they confirmed the need for the lip to make the undertray work.

[The-Traveler]

Originally Posted by TexasEmThree

Heard back from Laptorr, they confirmed the need for the lip to make the undertray work.

The ugly thing in the past above yours?

[derbo]

Originally Posted by TexasEmThree

Heard back from Laptorr, they confirmed the need for the lip to make the undertray work.

Figured as much. Boo.

[TexasEmThree]

Originally Posted by The-Traveler

The ugly thing in the past above yours?

Correct, the undertray attaches to the ugly front lip. I'm sure there is a way to drill through the existing bumper to attach it, but I don't want to butcher my bumper or spend $1000 to test this theory haha.

[TheMechanic]

You don't need cooling ducts... you need better pads and good fluid. I ran 7 track days last year on my M3 with Ferodo DS2500 pads and Motul RBF600 fluid... not a hint of fade in full summer even after 30 min sessions.

[MP0W3RD]

Originally Posted by TheMechanic

You don't need cooling ducts... you need better pads and good fluid. I ran 7 track days last year on my M3 with Ferodo DS2500 pads and Motul RBF600 fluid... not a hint of fade in full summer even after 30 min sessions.

The Ferodo DS2500s do NOT hold up to heavy braking depending on the track. I went through a brand new set in just over a day of track use (5 sessions day one, done after the first session on day 2).

They are okay for the rear but you need DS 1.11s or a similarly aggressive compound on the front rotors.

[DRLane]

Originally Posted by TheMechanic

You don't need cooling ducts... you need better pads and good fluid. I ran 7 track days last year on my M3 with Ferodo DS2500 pads and Motul RBF600 fluid... not a hint of fade in full summer even after 30 min sessions.

Depends on tires and pace…

[TheMechanic]

you are right.. it depends on the pace you keep, and how hard you are on the brakes. I am not out to set lap records, and my car is bone stock, so... I am also not on slicks but Michelin Pilot Supersports.
I do run in the Advanced class, and I have a motorcycle racing license; raced for a few years ... So I have a couple of minutes experience with tires and brakes

When braking, a little goes a long way

[TexasEmThree]

I run castrol SRF with hawk dtc 70 pads all around on Hankook rs4 at a circuit of the Americas and get just over a weekend with them (if it’s cool). So it seems to me that brake cooling would help tremendously for my situation.

[Z K]

Originally Posted by MP0W3RD

The Ferodo DS2500s do NOT hold up to heavy braking depending on the track. I went through a brand new set in just over a day of track use (5 sessions day one, done after the first session on day 2).

They are okay for the rear but you need DS 1.11s or a similarly aggressive compound on the front rotors.

+1

DS2500 should not be used for track days on heavy cars like the M3. They completely fall apart and melt into black chunks on track. They may be ok on light cars such as a Miata or maybe S2000.

[jritt@essex]

Below is a detailed article I wrote on the current most popular Ferodo Racing pad compounds:

Which Ferodo Brake Pad Compound is Right for Me?

While a lightly-driven e92 M3 on street tires may be able to get away with DS2500 at Roebling Road, a racing slick-equipped e92 M3 at Watkins Glen or Road America is a completely different ballgame.

Generalizations like, "stock brakes are great, you just need X" aren't really valid given the enormous number of variables involved. Below are just some of factors that impact how much the abuse your brakes will take on a racetrack. These variables are different for every car, every driver, every track, and every situation. There is no one single solution that works for everyone. A brake setup you may find perfectly adequate...the next driver may burn it down in the three laps on his car, under the conditions in which he is driving it. In my twenty+ years of working in the racing brake business, I've seen this statement ring true a million and one times.

Driving skill/style (hard or easy on brakes)
Track layout- tracks vary tremendously in how much heat they pour into the brakes
Number of consecutive laps
Speed reached at the end of each straight (related to corner exit speed and horsepower)
Tire size
Tire compound
Suspension setup/alignment (how much rubber is being put on the track)