Brake pedal feel BBK on track.

e46m3c · 26-09-2012, 10:29 AM

Morning All,

Quick post to pass some time and gain some knowledge.

When braking full force with 265 r888 all round in full fat m3 runing 356mm ksports and blue stuff pads on heaving braking tracks (bedford) i find the initial bite great and linear, However on the back straight i find you have to push the brake exponentially harder to get it to stop at max rate. Is this a function of the pads, increased grip, faulty brake survo?

At brake friendly tracks like donny i had no issues and brakes were great.

What do you rekon? K-Sports showing their budget? Should i go for RS29 instead of Blue? Ive used EBC on my last two track cars but they were both about 350kg lighter than my m3 so perhaps the blue's are a little out of their depth with the weight?

What you rekon?

e46m3c · 30-09-2012, 02:52 PM

bump

shane@mbtech · 30-09-2012, 03:17 PM

Quote:

Originally Posted by e46m3c

Morning All,

Quick post to pass some time and gain some knowledge.

When braking full force with 265 r888 all round in full fat m3 runing 356mm ksports and blue stuff pads on heaving braking tracks (bedford) i find the initial bite great and linear, However on the back straight i find you have to push the brake exponentially harder to get it to stop at max rate. Is this a function of the pads, increased grip, faulty brake survo?

At brake friendly tracks like donny i had no issues and brakes were great.

What do you rekon? K-Sports showing their budget? Should i go for RS29 instead of Blue? Ive used EBC on my last two track cars but they were both about 350kg lighter than my m3 so perhaps the blue's are a little out of their depth with the weight?

What you rekon?

Loads of mixed reviews on the bluestuff ndx. Most think they are shite.
Get some pagid rs or carbotech xp in there.

**shimmy** · 30-09-2012, 03:24 PM

Quote:

Originally Posted by lawsy

Loads of mixed reviews on the bluestuff ndx. Most think they are shite.
Get some pagid rs or carbotech xp in there.

Like the man says, dump the EBC. Not meant for heavy cars.

e46m3c · 30-09-2012, 03:24 PM

rs29's on the way. i still got a little life left on the blue so might do back to back comparison.

e46m3c · 01-10-2012, 11:27 AM

Will it be ok to keep blue on the rear and rs29 on the front? I just cant bring myself to spend over £500 of a set of pads....

e46m3c · 22-10-2012, 10:37 AM

Changed my mind and gone for Carbon Lorraine RC6 compound.

I also had a strange judder / wobble at Donington which is really distracting. I think i have a wheel in-balance, but also on the weekend when i got the brakes hot a small amount of brake judder started.

Hoping this is just contamination from over working the blue stuffs that the RC6 will clear at silverstone. Sound plausible?

We shall see.

Thanks for the advice.

**shimmy** · 22-10-2012, 11:11 AM

I would recommend keeping pad compound the same front and back, I found under heavy braking the rear of the car starts skipping and squirming if the rear pads are more road biased.

You may well have deposits on the discs and they may well clear with harsher compound pads, but no quarantine. The high temps on the front seem sometimes to coat it in pad deposits (uneven) and they can be permanent.

On a plus side there re not many trackdays when sometime during or after, I don't think that the pads/discs/dampers/tyres/bushes are goosed and panic, but it all seems to calm down on the trip home.

e46m3c · 22-10-2012, 11:21 AM

Yes sticking with front and rear RC6. £370 so significant saving on the Pagids and the reviews seem very good.

The fact the wobble gets worse when brakes are warmer is probably not a good sign. Everytime ive had this in the past, new discs was the only way to go. However these discs only have 2 days and about 3k on them from new so i hope thats not the case.

**shimmy** · 22-10-2012, 11:23 AM

Quote:

Originally Posted by e46m3c

Yes sticking with front and rear RC6. £370 so significant saving on the Pagids and the reviews seem very good.

The fact the wobble gets worse when brakes are warmer is probably not a good sign. Everytime ive had this in the past, new discs was the only way to go. However these discs only have 2 days and about 3k on them from new so i hope thats not the case.

But maybe the price you pay for using cheap cheese pads

(did the same thing a few years ago)

26-09-2012, 10:29 AM	#1
e46m3c S3 - On the open road Join Date: Nov 2010 Location: Berkshire Posts: 95 Casino cash: $1359	Brake pedal feel BBK on track. Morning All, Quick post to pass some time and gain some knowledge. When braking full force with 265 r888 all round in full fat m3 runing 356mm ksports and blue stuff pads on heaving braking tracks (bedford) i find the initial bite great and linear, However on the back straight i find you have to push the brake exponentially harder to get it to stop at max rate. Is this a function of the pads, increased grip, faulty brake survo? At brake friendly tracks like donny i had no issues and brakes were great. What do you rekon? K-Sports showing their budget? Should i go for RS29 instead of Blue? Ive used EBC on my last two track cars but they were both about 350kg lighter than my m3 so perhaps the blue's are a little out of their depth with the weight? What you rekon?

22-10-2012, 10:37 AM	#7
e46m3c S3 - On the open road Join Date: Nov 2010 Location: Berkshire Posts: 95 Casino cash: $1359	Changed my mind and gone for Carbon Lorraine RC6 compound. I also had a strange judder / wobble at Donington which is really distracting. I think i have a wheel in-balance, but also on the weekend when i got the brakes hot a small amount of brake judder started. Hoping this is just contamination from over working the blue stuffs that the RC6 will clear at silverstone. Sound plausible? We shall see. Thanks for the advice. Last edited by e46m3c; 22-10-2012 at 11:18 AM.

22-10-2012, 11:11 AM	#8
shimmy CSL Register Uber-poster! Join Date: Apr 2008 Location: Uk Posts: 14,646 Casino cash: $43909	I would recommend keeping pad compound the same front and back, I found under heavy braking the rear of the car starts skipping and squirming if the rear pads are more road biased. You may well have deposits on the discs and they may well clear with harsher compound pads, but no quarantine. The high temps on the front seem sometimes to coat it in pad deposits (uneven) and they can be permanent. On a plus side there re not many trackdays when sometime during or after, I don't think that the pads/discs/dampers/tyres/bushes are goosed and panic, but it all seems to calm down on the trip home. __________________ .

30-09-2012, 02:52 PM	#2
e46m3c S3 - On the open road Join Date: Nov 2010 Location: Berkshire Posts: 95 Casino cash: $1359	bump

30-09-2012, 03:24 PM	#5
e46m3c S3 - On the open road Join Date: Nov 2010 Location: Berkshire Posts: 95 Casino cash: $1359	rs29's on the way. i still got a little life left on the blue so might do back to back comparison.

01-10-2012, 11:27 AM	#6
e46m3c S3 - On the open road Join Date: Nov 2010 Location: Berkshire Posts: 95 Casino cash: $1359	Will it be ok to keep blue on the rear and rs29 on the front? I just cant bring myself to spend over £500 of a set of pads....

22-10-2012, 11:21 AM	#9
e46m3c S3 - On the open road Join Date: Nov 2010 Location: Berkshire Posts: 95 Casino cash: $1359	Yes sticking with front and rear RC6. £370 so significant saving on the Pagids and the reviews seem very good. The fact the wobble gets worse when brakes are warmer is probably not a good sign. Everytime ive had this in the past, new discs was the only way to go. However these discs only have 2 days and about 3k on them from new so i hope thats not the case.