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      09-09-2020, 09:43 AM   #1
r1sthebest
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First time ever on track (Zolder)

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Hi,

Last sunday my first time ever on track (Zolder / Belgium) with a car. It felt amazing
The car (M2 Competition) was standard except the tires (Michelin PS 4S).
I have the big brakes, but at Zolder they were insufficient. Now I have a humming sound when I brake.



And with the Gopro (helmet)



Gopro helmet second part

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      09-09-2020, 10:01 AM   #2
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Great driving
I saw you driving in real life and it was great
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      09-09-2020, 10:16 AM   #3
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Quote:
Originally Posted by r1sthebest View Post
Hi,
Last sunday my first time ever on track (Zolder / Belgium) with a car. It felt amazing
The car (M2 Competition) was standard except the tires (Michelin PS 4S).
I have the big brakes, but at Zolder they were insufficient. Now I have a humming sound when I brake.
Zolder is one of my fav tracks I have not yet been there in the M2C.

It is very hard on the brakes though with the 3 chicanes/switchbacks after longish straights.

The humming is likely from pad deposits on the brakes. This is common with the OEM pads when used on track. My recomendation is you replace them with some track pads (Pagid RSL 29 is my choice) and this will clean the deposits and remove the humming.

If you plan to track more I would also look into uprated fluid (Castrol SRF /Motul RBF 600 or 660 / Endless RF 650 are all good choices) and maybe look into some brake cooling (check my profile for ideas, I sell some 3D printed scoops to achieve this).

Most importantly keep having fun!

PS: your lines are pretty good, where you following the white M4 as a learner?
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Last edited by Megator; 09-09-2020 at 10:23 AM..
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      09-09-2020, 10:51 AM   #4
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Quote:
Originally Posted by Megator View Post
Zolder is one of my fav tracks I have not yet been there in the M2C.

It is very hard on the brakes though with the 3 chicanes/switchbacks after longish straights.

The humming is likely from pad deposits on the brakes. This is common with the OEM pads when used on track. My recomendation is you replace them with some track pads (Pagid RSL 29 is my choice) and this will clean the deposits and remove the humming.

If you plan to track more I would also look into uprated fluid (Castrol SRF /Motul RBF 600 or 660 / Endless RF 650 are all good choices) and maybe look into some brake cooling (check my profile for ideas, I sell some 3D printed scoops to achieve this).

Most importantly keep having fun!

PS: your lines are pretty good, where you following the white M4 as a learner?
Thanks for the advice! Tomorow I think I will go to my dealer. I will ask him if it is normal that the brakes are humming after 6000km. Maybe it will become something in warranty??
I will defenitly upgrade the oil and maybe the brakelines and pads as well.

No I was not following the M4 as a learner When I came on track he already had done a lap so his car was on temp and I was in my warm-up lap. I always wanted to pass him, but I couldn't. So I had to outbrake him with a litlle bit sweat in the hands

My fastest lap was when I had open track (folowing nobody) 1.53.7
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      09-09-2020, 11:20 AM   #5
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Quote:
Originally Posted by r1sthebest View Post
Thanks for the advice! Tomorow I think I will go to my dealer. I will ask him if it is normal that the brakes are humming after 6000km. Maybe it will become something in warranty??
I will defenitly upgrade the oil and maybe the brakelines and pads as well.

No I was not following the M4 as a learner When I came on track he already had done a lap so his car was on temp and I was in my warm-up lap. I always wanted to pass him, but I couldn't. So I had to outbrake him with a litlle bit sweat in the hands

My fastest lap was when I had open track (folowing nobody) 1.53.7
Damn 1:53.7 is very fast! well done!

You may have some luck at the dealer but BMW is pretty clued up as to what is going on and seem to deny a lot of brake warranties.

I know different brake pads are a pain in BE due to the APK there but trust me they are worth it on track.
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      09-09-2020, 01:24 PM   #6
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Congratulations Xavier! Great laptime for the first time on this circuit. Many are still trying to stay under 2 minutes after several attempts.
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      09-10-2020, 05:19 AM   #7
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Nice driving!

I will join you one day soon in Zolder when my break-in period has ended and I have put some more miles on it
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      09-11-2020, 08:36 PM   #8
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Quote:
Originally Posted by Pol View Post
Congratulations Xavier! Great laptime for the first time on this circuit. Many are still trying to stay under 2 minutes after several attempts.
Thanks @pol it was a very nice day! Glad to meet you and the guys.



Quote:
Originally Posted by Sharasuke View Post
Nice driving!

I will join you one day soon in Zolder when my break-in period has ended and I have put some more miles on it
Super! Maybe one day we'll meet eachother there. 😉
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      09-12-2020, 05:31 PM   #9
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Quote:
Originally Posted by r1sthebest View Post
I have the big brakes, but at Zolder they were insufficient. Now I have a humming sound when I brake.
See for example SIB 34 10 19 (Service Information Bulletin of Dec 2019):
https://static.nhtsa.gov/odi/tsbs/20...70577-9999.pdf
"The increased material build-up on the brake pad and then onto the brake disc after extremely sporty driving can cause a humming noise which disappears after a short time with subsequent braking."
Damage patterns of brake system: see for example here:
"Fault cause:
Racing-like driving, unapproved accessories or cleaning agents and also non-compliance with the operating instructions cause vibrations on brake actuation on the steering wheel."
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