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2.9K views 63 replies 10 participants last post by  Tumbleweed  
#1 ·
I will be getting the 750 soon, I keep saying that but hopefully next week. I have a couple track days that were already planned for next month and want to see if any changes need to be done prior. Usually I'm changing out brake fluid to high temp like motul660, better brake pads, and then tire alignment.

Thoughts on flushing brake fluid?

I'm sure stock pads will be fine for the first two track days and then can replace over the winter for something better? The car has about 200miles on it so I doubt any bedding was done, not sure if worthwhile to even bother at this point.
 
#2 ·
The stock pads may not last two days, depending on the track and how you're driving it. The standard brake fluid is pretty good, again it depends on the track and how you drive. Be careful with the rotors, do good cool down laps. I would run stock alignment first, you'll get a lot of wear on the outside edges though.
 
#3 ·
Woah, only two days? I get the opportunity to go to Area27 in BC, have not been there before so will be trailering up. It is 3m but the longest straight is only about .5m. I try to be aggressive but being a new track and a new car, I'm sure I wont be pushing super hard. My first time at COTA was 2:31 and was also trying to be somewhat careful as being new track also.

What pads do you recommend? I've always run steel/iron rotors so this will be a first using CCB
 
#5 ·
at COTA, I was in a Z06. agree on .5m straight 140-150 is realistic. I don't have the track upgrade option so they are just the stock.

Will be at A27 and then driving down to Sonoma and maybe Thunderhill before I close out the year. So likely 4 track days for 2025.

I usually do 10-15 track days a year so don't want to be replacing those rotors that often. will definitely want to make a change. Tires not sure. Planning on getting a set of wheels for track (set on here with some Goodyears already installed) and then test out different ones. My experience has been mainly Michelin but heard good things about the GY and I think it comes with the P Corsa so will see on those as well.
 
#9 ·
If you’re tracking 10-15 times a year then I’d get the track alignment and have them adjust camber to your preferred style (over/understeer). Stock pads will go quick and rotors faster than you’d think. Trust me, you don’t want to have to replace rotors.

For your fist time out I’d probably just run it in stock form…then make adjustments afterwards so at least you’ll have a ‘baseline’ from which to work. Much more cost effective to go steel rotors if you’re track that much. Not sure what your experience with Macs is, but it’ll be much faster than the Z06.

Lastly…unless I’m missing something, like a huge uphill (eau rouge), a 1/2 mile straight away is more like 160-175mph. Much more than 140-150mph. These things do 145-150mph in a standing 1/4 mile let alone a rolling 1/2 mile…

Yes to the GY3R…great tire
 
#11 ·
Both my 720 and now my 750 I took to the track with only a tire change and adjust alignment. The 720 alignment was good but the 750 had a bad toe adjustment from the factory. I put sticky tires on. The cars are amazing on the track. No changes needed. I get multiple tracks days with the OEM pads (2 track days & 5700 miles on the 720 so far with only 2mm pad wear). Im easy on the brakes. But this is me - a slow/cautious expert (track events since 1989, former SCCA racer). Drive the car as is. McLarens are amazing. Change the tires & check the alignment. Have fun!
 
#16 ·
Good question. The expense would be the pads, I think @aorta said they were $4500 for a front set. I'm not sure if there's an aftermarket option, or if they're the same size as the standard caliper.
I just had the 3R tires on my 750. They are amazing on the track. Darty on roads with cracks and lines. I just installed Nanking CR-S tires. I'm driving to Car Week in Monterey next week and then a track event at Sears Point (Sonoma) next month. ImHuntingWabbits likes the Nankings for the track & road so on his advice I'm giving them a try. I've also used PS Cup2R, Trofeo R & Hoosier R7 tires which were ok but I like the 3Rs better for the track.
Does any non McLaren source make brake pads for 750 ?
Same as720 ?
I will check my sources Monday
I used to be in racing business / know suppliers
 
#20 ·
Does any non McLaren source make brake pads for 750 ?
Same as720 ?
I will check my sources Monday
I used to be in racing business / know suppliers
Nankangs like 3 Rs great but less available than 3Rs
Do you use 245 35 front 305 30 rear ?
I wonder if the pads are harder on the 750 (I assume you meant the 750, not the 720)? Mine wear about 3mm a day, with the front right losing at least 4mm in a day at COTA. With wear that low I would definitely stick with the stock pads.
How much are OEM front pads for a 750 from the dealer ?
 
#33 ·
BUMMER o_OWhat model MaC ? OEM CC brakes ?
Consider switching to GIRODISC steel brakes if you are going to track it alot
I have used them for 12 years on two MaCs and now on my 2022 Turbo S Lightweight
Right now Girodisc has the best rotors Metalurgy -wise Even better than AP racing
I used to be a big racer and was in the racing business also
If you get pads for them Gyrodisc race/track pads squeak like mad on the street
Try Pagid or Porterfiels Enterprices
Paragon Products you can call for advise although they are primarily Porsche track stuff
 
#34 ·
This is one reason I switched to RSC1, on stock pads it's hard to run for a weekend without changing them.
O
I would trust but verify. @aorta posted about them costing $4500, and there's a lengthy thread about the difficulties of obtaining pads for a Senna a few years ago.
plitniick
This is one reason I switched to RSC1, on stock pads it's hard to run for a weekend without changing them.
This is one reason I switched to RSC1, on stock pads it's hard to run for a weekend without changing them.
Plitnic
Pagid makes awesome pads used for decades worldwide in sprint and endurance racing
I raced Porsches
Pagid makes 3 CC different pads that apparently fit on the 720 S caliper and on other MaC calipers
Most MaC trackers switch to steel from CC as do Porsche do trackers due to horrible cost of Brembo rotors that run about $32000 for 4
They are only sold as pairs or all 44

Same for Lambo and Fe
 
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#35 ·
O

plitniick


Plitnic
Pagid makes awesome pads used for decades worldwide in sprint and endurance racing
I raced Porsches
Pagid makes 3 CC different pads that apparently fit on the 720 S caliper and on other MaC calipers
Most MaC trackers switch to steel from CC as do Porsche do trackers due to horrible cost of Brembo rotors that run about $32000 for 4
They are only sold as pairs or all 44

Same for Lambo and Fe
 
#37 ·
There are much better CCB alternatives. My long fiber brake conversion is about $12k. Girodisc rotors weigh twice as much, don't last long, have a tendency to crack, aren't cheap, and they produce horrendous dust. These are the reasons I don't use them.
There are much better CCB alternatives. My long fiber brake conversion is about $12k. Girodisc rotors weigh twice as much, don't last long, have a tendency to crack, aren't cheap, and they produce horrendous dust. These are the reasons I don't use them.
There are much better CCB alternatives. My long fiber brake conversion is about $12k. Girodisc rotors weigh twice as much, don't last long, have a tendency to crack, aren't cheap, and they produce horrendous dust. These are the reasons I don't use them.
Am ignorant about LONG FIBER brakes
Never even heard of such
Essex Racing has been the major source for Porsche Mclaren and many other racecars / Drag and track day cars for decades with AP brakes
AP has been around almost for a century Huge in pro endurance racing like Le Mans and Formula One
aircraft Nascar WRC SCCA IMSA
Google it :AP Racing
Currently Essex they are suppling their sports car clients with GYRODISC rotors as they do NOT crack /are the best for Porsche / Mclaren Ford Chevy etc
I was in the racing business back in the 80's Essex is US distributor for AP since 1984
Brembo bought AP racing in 2000
C C brakes great for street but way too costly for regular track day use especially on tracks with severe braking zones like Laguna Seca here in CA
A weekend there can cost thousands of dollares for a soft CC brake system like OEM on McLarens
 
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#40 ·
Look up Triton long fiber rotors. It's a much more cost effective option. I know all about AP, they're owned by Brembo, as are Pagid.

The Senna rotors that come with the 750/765 track brake option are long fiber. I don't know for sure about those, but the Triton rotors can be resurfaced three times. I suspect the Senna rotors may not be able to be resurfaced because I know someone who tracks his Senna, his rotors are a mess and he has a new set waiting to go on.
Thanks for the info
Broomhilda
Imhuntingwabbits had the surface treatment done on his rotors. He says they are holding up well.
Wabbits
please clarify What brand rotor did you have resurfaced ?
 
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#41 ·
Coming to this late. I did a set of front pads in three quarters of a track day at Silverstone GP last year. I would take a spare set of front pads with you and either know how to fit them or make sure someone is there who does. I didn't buy my 750 for track work; if I were to use it regularly, I'd be looking either at the track brake upgrade or using Surface Transforms. I have STs on my GT3RS and they both perform and last very well. It will depend on your driving style and the circuit, but if you brake late and hard at a track with big stops you will get through standard pads at a surprising rate.
 
#45 ·
Good info
Going through the rotors is what worries me expense wise
I have used Girodiscs on my McLarens for 10 years 12-C and 600 LT
 
#44 ·
I met a gentlemen at one of the Audi events from REBrake. They resurface CCB rotors. I have never had mine done by them, but I have driven with this guy and he has also done some Brake Tech presentations at one of the club events; he knows his stuff. I believe he has a good following with the Porsche guys. He may be worth a try for resurfacing. I have a flyer at home with his contact info if anyone is interested.
 
#51 ·
If you're worried about running costs you need to switch to steel. It doesn't matter if it's the Essex kit or Girodiscs, nothing beats the per-day cost of steelies.

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I will have more details at some point (I haven't finished putting all my notes together). But I had Rebrake refinish my OEM set of carbons for my car. RebrakeUSA LLC

Those numbers are based on the following service life estimates:

ComponentService Life (# of track days)
Steel front rotor20 (my girodiscs cracked around here)
Steel rear rotor40
OEM CCB Front (OEM Friction Layer)10
OEM CCB w/ Rebrake Friction Layer40 (estimated by my wear numbers)
Triton CCB Rotor40 (est, waiting to hear how they wear)
Surface Transform CCB Rotor40 (est, need to confirm)
RacingBrake CCB Rotor40 (est, need to confirm)

They are holding up very well. 3 sets of Pagids later the friction surface is still new looking (8 days on the new friction layer, 14 total on the rotor). They are approx 1/3 through their wear life (reading 0.6 all around, will run them all the way to 1.8 or 1.9).

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Rebrake and I are both a bit skeptical I will get a full 40 days out of the friction layer, so I expect to send them in again for another resurfacing around day 20 at the end of this year or early next.