Braking Performance

RealStig · 02-25-2014, 09:16 PM

One area where I'm a bit worried about the M5 is the braking performance. This is something I have ignored initially and after watching numerous reviews and reading several performance metrics, I see that the 4300 lbs weight takes its toll on the braking distances.

I see that the competition package M5, from 60 mph, stops in 106-107 ft whereas the current M3, with the competition package, stops in 99-100 ft (note : the new M3 will probably better than this).

I want to ask the owners, what is your take? Is this a problem in daily driving? Do you have any issues with braking? How does it compare with the M3 and the previous M5?

Thanks.

RPiM5 · 02-25-2014, 09:23 PM

Dude, you sure ask a lot of questions. Lol!

Anyways, we're happy to answer them.

Standard steel brakes are very very good. The 6 pots up front are very strong. I've driven the M5 at the track and at the M Performance school. The M5 stops very well despite its weight. The CCB's are even better!

RealStig · 02-25-2014, 09:50 PM

Quote:

Originally Posted by RPiM5

Dude, you sure ask a lot of questions. Lol!

Anyways, we're happy to answer them.

Standard steel brakes are very very good. The 6 pots up front are very strong. I've driven the M5 at the track and at the M Performance school. The M5 stops very well despite its weight. The CCB's are even better!

I am still deciding between the Ms, thats why I m asking a lot of questions, apologies if its getting annoying!

I thought CCBs only improved brake fading and didnt improve braking distance though, can someone confirm?

avlnch · 02-25-2014, 10:16 PM

Speaking about brakes, I do not understand why M put that crappy looking (is it 1 piston?) floating calipers on the rear discs. They really look bad. Because of the imperfect metal it looks like a horrible paint job.

Why couldn't they put another set of (6 piston?) fixed calipers on the rear like they are on the front?

MSportDC · 02-25-2014, 11:24 PM

Quote:

Originally Posted by avlnch

Speaking about brakes, I do not understand why M put that crappy looking (is it 1 piston?) floating calipers on the rear discs. They really look bad. Because of the imperfect metal it looks like a horrible paint job.

Why couldn't they put another set of (6 piston?) fixed calipers on the rear like they are on the front?

Margins.

Theballzack · 02-26-2014, 12:15 AM

These brakes will save your ass. Enough said.

boots · 02-26-2014, 02:37 AM

Quote:

Originally Posted by RealStig

I see that the competition package M5, from 60 mph, stops in 106-107 ft whereas the current M3, with the competition package, stops in 99-100 ft (note : the new M3 will probably better than this).

Thanks.

In this section you can't compare stopping distance due to their weight differences. Two different cars.

DrewM5 · 02-26-2014, 07:25 AM

I find the brakes remarkable. Whenever I let someone drive the car, the first comment is on the power and the second is always on how well the brakes reign her in.

chong0 · 02-26-2014, 07:33 PM

brakes for daily driving are not an issue and feel fine.

brakes at the track become obvious very quickly that fade is an issue. I plan to retry the track with hawk dtc 30s to see if the fade improves.

RealStig · 02-26-2014, 07:37 PM

Quote:

Originally Posted by chong0

brakes for daily driving are not an issue and feel fine.

brakes at the track become obvious very quickly that fade is an issue. I plan to retry the track with hawk dtc 30s to see if the fade improves.

I dont track my cars so this is not a problem for me. I think any M car will have the same problem though unless you have CCBs.

chong0 · 02-26-2014, 09:41 PM

Quote:

Originally Posted by avlnch

Speaking about brakes, I do not understand why M put that crappy looking (is it 1 piston?) floating calipers on the rear discs. They really look bad. Because of the imperfect metal it looks like a horrible paint job.

Why couldn't they put another set of (6 piston?) fixed calipers on the rear like they are on the front?

i asked the same question in a previous post and was told it has something to do with the electronic brake and that they were unable to get the e-brake and 6 pistons on in the back. I thought they would rectify this with the F80/F82 but it still seems like floating on the rears.

porsche has an electronic e-brake and has 6 piston rears...why not us?

pkimM3r · 02-26-2014, 09:44 PM

I would expect fade in track situations but in the city? Cmon you know better than that.

pkimM3r · 02-26-2014, 09:45 PM

Quote:

Originally Posted by boots

Quote:

Originally Posted by RealStig

I see that the competition package M5, from 60 mph, stops in 106-107 ft whereas the current M3, with the competition package, stops in 99-100 ft (note : the new M3 will probably better than this).

Thanks.

In this section you can't compare stopping distance due to their weight differences. Two different cars.

Hes noting the weight. Why cant you compare?

ShainoF10M5 · 02-27-2014, 12:02 AM

Quote:

Originally Posted by DrewM5

I find the brakes remarkable. Whenever I let someone drive the car, the first comment is on the power and the second is always on how well the brakes reign her in.

Ditto.

v12 · 02-27-2014, 09:20 AM

Quote:

Originally Posted by RPiM5

Dude, you sure ask a lot of questions. Lol!

Anyways, we're happy to answer them.

Standard steel brakes are very very good. The 6 pots up front are very strong. I've driven the M5 at the track and at the M Performance school. The M5 stops very well despite its weight. The CCB's are even better!

I handled the CCB rotors and I was shocked how light they are: lift with one finger. Better/ lighter wheels + CCB = nice unsprung weight savings.

URBAN LEGEND · 02-27-2014, 10:02 AM

Quote:

Originally Posted by chong0

porsche has an electronic e-brake and has 6 piston rears...why not us?

That's what you get when Porsche can change 184,000.00 for a car very similar to what BMW charges 120,000.00 for.

Perks...

M3PGH · 02-27-2014, 04:02 PM

agree with chong0
normal daily driving no problem with brakes at all
on the track, brakes faded after couple of laps

avlnch · 02-27-2014, 06:02 PM

Quote:

Originally Posted by URBAN LEGEND

Quote:

Originally Posted by chong0

porsche has an electronic e-brake and has 6 piston rears...why not us?

That's what you get when Porsche can change 184,000.00 for a car very similar to what BMW charges 120,000.00 for.

Perks...

Yeah but I also find Porsche to be better build quality (things like door hinges) and interior quality (leather). Also so many options for Porsche.

If BMW couldn't fit e brake then they should of kept the standard pull brake lever like they had in the E60 M5. It was simple and made sense. Not a fan of e-brake.

clar · 02-27-2014, 06:28 PM

OP, if u are never gonna track your M5 in future, there is absolutely no concern in the braking department. I retrofitted the CCB on my M5, but mostly for cosmetic reason and to rid myself of those nasty brake dusts. Stock brakes are very good and nobody should be complaining about them unless taking it to the track. Now I have to deal with brake squeal with the CCB

avlnch · 02-27-2014, 07:54 PM

Quote:

Originally Posted by clar

OP, if u are never gonna track your M5 in future, there is absolutely no concern in the braking department. I retrofitted the CCB on my M5, but mostly for cosmetic reason and to rid myself of those nasty brake dusts. Stock brakes are very good and nobody should be complaining about them unless taking it to the track. Now I have to deal with brake squeal with the CCB

Squeal only when cold or always? Or only when slow speed braking?

clar · 02-28-2014, 10:09 AM

Quote:

Originally Posted by avlnch

Squeal only when cold or always? Or only when slow speed braking?

Actually, it squeals when warmed. The car is mostly used in city driving, so mostly low speed braking.

RealStig · 02-28-2014, 06:32 PM

I have test driven the M5 again today, for the 4th time! This was mostly for braking, which was something I didn't properly test before. I can tell you that compared to my good old E90 M3, the braking is really not that great. At 40-50 mph, if I slam the brakes, the car takes a lot longer to stop than my M3 and the difference is extremely visible and made me very uncomfortable. Yes in city driving with casual turns, it is acceptable, but if you really want to drive the car hard, 4300 lbs shows its weight and it is quite noticeable.

Now remember that what I am comparing this car against is a 2011 model M3, the new M3 is lighter and has much better brakes and tires, so the difference will most likely be more pronounced.

That being said, if anyone drives the M5 the way I did today, they probably have bought the wrong car to begin with. I think they are two totally different cars. So don't take what I said the wrong way.

02-25-2014, 09:16 PM	#1
RealStig Banned 52 Rep 502 Posts Drives: M3 Join Date: Jan 2014 Location: NJ iTrader: (0)	Braking Performance One area where I'm a bit worried about the M5 is the braking performance. This is something I have ignored initially and after watching numerous reviews and reading several performance metrics, I see that the 4300 lbs weight takes its toll on the braking distances. I see that the competition package M5, from 60 mph, stops in 106-107 ft whereas the current M3, with the competition package, stops in 99-100 ft (note : the new M3 will probably better than this). I want to ask the owners, what is your take? Is this a problem in daily driving? Do you have any issues with braking? How does it compare with the M3 and the previous M5? Thanks.
	Appreciate 0 Tweet Quote

02-25-2014, 09:23 PM	#2
RPiM5 Major General 2873 Rep 7,885 Posts Drives: Black M5 Join Date: Apr 2012 Location: Earth 616 iTrader: (0)	Dude, you sure ask a lot of questions. Lol! Anyways, we're happy to answer them. Standard steel brakes are very very good. The 6 pots up front are very strong. I've driven the M5 at the track and at the M Performance school. The M5 stops very well despite its weight. The CCB's are even better! __________________
	Appreciate 0 Quote

02-25-2014, 10:16 PM	#4
avlnch Lieutenant Colonel 127 Rep 1,622 Posts Drives: 2013 Individual M5 Join Date: Jul 2007 Location: South FL iTrader: (0)	Speaking about brakes, I do not understand why M put that crappy looking (is it 1 piston?) floating calipers on the rear discs. They really look bad. Because of the imperfect metal it looks like a horrible paint job. Why couldn't they put another set of (6 piston?) fixed calipers on the rear like they are on the front? __________________ 2013 BMW INDIVIDUAL ///M5 {Frozen Black/Amaro Brown/Amaro Brown Alcantara/White Contrast Stitching/Piano Black Trim}
	Appreciate 0 Quote

02-26-2014, 12:15 AM	#6
Theballzack Certified Trainer 7 Rep 73 Posts Drives: Space Grey 2013 M5 Join Date: Dec 2013 Location: Denver, CO iTrader: (0)	These brakes will save your ass. Enough said. __________________ 2013 Space Grey Metallic ,Akrapovic Exhaust ,HRE P40s,Matte Black,Gruppe M Intake,Escort 9500ci,DVD in motion
	Appreciate 0 Quote

02-26-2014, 07:25 AM	#8
DrewM5 Captain 53 Rep 739 Posts Drives: SG E60 M5 Join Date: Sep 2012 Location: New York iTrader: (0)	I find the brakes remarkable. Whenever I let someone drive the car, the first comment is on the power and the second is always on how well the brakes reign her in. __________________ 2014 M5 Competition\|Space Grey\|Black Merino Full Leather\|Anthracite Trim\|Executive package\|LED Lighting Package\|Drivers's Assit Package\|B&O Sound System\|Bel STiR Plus 9500ci\|IND Side Markers and Side Vents\|Exhaustmeister\|HRE P101 Satin Charcoal/Michelin PSS (Summer)\|601/Pirelli Sottozero Serie II (Winter)\|Coded by V12
	Appreciate 0 Quote

02-26-2014, 07:33 PM	#9
chong0 First Lieutenant 49 Rep 317 Posts Drives: '16 X5 5.0 Join Date: Apr 2012 Location: MA iTrader: (0)	brakes for daily driving are not an issue and feel fine. brakes at the track become obvious very quickly that fade is an issue. I plan to retry the track with hawk dtc 30s to see if the fade improves. __________________ '22 Macan GTS '21 911 C2S '20 Cayenne '16 X5 50i M-sport (3rd row!)
	Appreciate 0 Quote

02-26-2014, 09:44 PM	#12
pkimM3r Banned 205 Rep 7,298 Posts Drives: m3 saloon in granny mode. Join Date: Dec 2009 Location: lost angeles iTrader: (0)	I would expect fade in track situations but in the city? Cmon you know better than that.
	Appreciate 0 Quote

02-27-2014, 04:02 PM	#17
M3PGH Major 807 Rep 1,401 Posts Drives: Too Many Join Date: Mar 2009 Location: Pittsburgh,PA iTrader: (1)	agree with chong0 normal daily driving no problem with brakes at all on the track, brakes faded after couple of laps
	Appreciate 0 Quote

02-27-2014, 06:28 PM	#19
clar Major 144 Rep 1,440 Posts Drives: M5 Join Date: Feb 2009 Location: Singapore iTrader: (0)	OP, if u are never gonna track your M5 in future, there is absolutely no concern in the braking department. I retrofitted the CCB on my M5, but mostly for cosmetic reason and to rid myself of those nasty brake dusts. Stock brakes are very good and nobody should be complaining about them unless taking it to the track. Now I have to deal with brake squeal with the CCB __________________ - Frozen Grey F10 M5 DCT - Rosso Corsa 458 Speciale Sold - Frozen Grey E92 M3 Sold
	Appreciate 0 Quote

02-28-2014, 06:32 PM	#22
RealStig Banned 52 Rep 502 Posts Drives: M3 Join Date: Jan 2014 Location: NJ iTrader: (0)	I have test driven the M5 again today, for the 4th time! This was mostly for braking, which was something I didn't properly test before. I can tell you that compared to my good old E90 M3, the braking is really not that great. At 40-50 mph, if I slam the brakes, the car takes a lot longer to stop than my M3 and the difference is extremely visible and made me very uncomfortable. Yes in city driving with casual turns, it is acceptable, but if you really want to drive the car hard, 4300 lbs shows its weight and it is quite noticeable. Now remember that what I am comparing this car against is a 2011 model M3, the new M3 is lighter and has much better brakes and tires, so the difference will most likely be more pronounced. That being said, if anyone drives the M5 the way I did today, they probably have bought the wrong car to begin with. I think they are two totally different cars. So don't take what I said the wrong way.
	Appreciate 0 Quote