Must admit the brakes were the one big disappointment on the M3 CSL which nobody can deny was supposed to be used for track days. BMW even insisted you had a race licence if you wanted it unlimited. Unfortunately not many people did more than one track day before deciding to upgrade the brakes which is not acceptable on a car designed for track days. Cannot believe that BMW went to the lengths of fitting a carbon Fibre roof and did not bother to have quality brakes.
Yes... i find this funny.
Isn't it REALLY strange... assuming they are not doing this on porpuse, "just to be mean" (like my boss says), then WHY?
I don't see what they have to gain from it, that's all.
2001 540i 6-Speed
StopTech 4-wheel big brake upgrade (ST-60 front/ST22 rear)
M5 3.15 Limited Slip Differential M5 Front Swaybar
Dinan Stage 3 Suspension
Dinan Front Strut Tower Brace
Rogue Octane Short Shifter & Transmission Mounts
European Dash Conversion CDV Deleted (of course!)
Bluetooth, NAV-TV, DVD Player
2006 Chrysler 300C SRT8 w/StopTech ST-60 front/ST-40 rear BBK 2007 Corvette Z51 Coupe 6-Speed w/StopTech Trophy ST-60 front/ST-40 rear 2009 Honda Fit Sport w/NAV w/Acura Integra front calipers, StopTech floating rotors on order
The best brakes (OEM) ever put on an M5 were on the 95. These are the same brakes found on an 850 CSI. 4 pot in the front and full floating. These brakes are on a par with my Brembos that are on my E39. In fact the calipers on the front are made by brembo. Very good system coupled with close to 400 lbs less weight and they will out brake an E39 hands down.
While I don't have those brakes on the rear, I have the front 345mm and run a race pad in the back. I can get them overheated on track but they do work very well. If I had to do the upgrade again I might avoid them due to the weight (you could anchor a freighter). However, they were such an easy bolt on I couldn't resist. I haven't driven my friends E34 that has the 328 rears but he tracks the car with stock pads with no issues (intermediate driver).
By the way, although I understand that BMW is building brakes just for a roadcar, given the effort in all the useless stuff in the interior, $2k real perf. brakes should have been done. With that said, this is totally consistent with how BMW has done brakes for 20 years.
__________________
Kevin Kelly
91 M5 Alpine White/Black
(D'Sylva Chip, Dinan springs w/Konis, camber plates
Racing Dynamics sway bars, 18" BBS RC's
345mm brakes)
'95 M3 Avus/Dove, (Conforti CAI/software, 24lb inj., GC suspension), new track rat.
Last edited by KKelly; 12th January 2005 at 18:04.
While I don't have those brakes on the rear, I have the front 345mm and run a race pad in the back. I can get them overheated on track but they do work very well. If I had to do the upgrade again I might avoid them due to the weight (you could anchor a freighter). However, they were such an easy bolt on I couldn't resist. I haven't driven my friends E34 that has the 328 rears but he tracks the car with stock pads with no issues (intermediate driver).
The only issue I have had on the track, and I have it will all my BMW's is brake judder. I experience this with my E34 and my E39 with the Brembos. I suspect it's more technique than brakes. The judder appears usually in the second or third session and get's worse as the day progresses.
After the day I simply follow Dave Z's instructions and it disappears.
The best brakes (OEM) ever put on an M5 were on the 95. These are the same brakes found on an 850 CSI. 4 pot in the front and full floating. These brakes are on a par with my Brembos that are on my E39. In fact the calipers on the front are made by brembo. Very good system coupled with close to 400 lbs less weight and they will out brake an E39 hands down.
I believe I read somewhere that Dinan put the 850 brakes on an E39 at one point. Do they fit directly?
I'm working for ContiTeves , the supplier for the brakes of the M5/M6 and the DSC.
In my opinion the brakes of the E60 M5 are very good.
Its possible to kill every brake on a racetrack.
I heard about someone who has a 996 gt2 wants to have better brakes.
Porsche says that their brakes are made for the road not for track use.
To the calippers:
The 2 piston calippers of the M5 are very good.
Also the 1 poston calippers of the M3 / CSL are very good.
But without coolling the brakes is heating up very fast.
Much 4 or 6 piston calippers have the problem of boiling brake fluid, because the flzuid must be on both side of the disc.
And you should consider that brake performance ist one thing.
On the other hand that brake must be working every day , should not squeal and so on. If you are using other brake pads the brake performance of the CSL is much better. But the Pagis RS19 are very loud.
90% of the M cars never see a track. All these M owner would be very irritated about that squealing noise.
The real issue here Jerry is that Porsche brakes are 'designed' for the street also, BUT they don't fade at the track, (at least at the usual DE type of events most of us would use our M cars for). Both my '01 M5 and then my '02 M3 had pathetic brakes for DE events, whereas I've never had a problem with the brakes on either of the Porsches I've owned, or a '99 E55 for that matter. Further, no other high performance car that I am aware of has the type of brakes that BMW cling to. Every other system is using multiple pistons, pads, etc., in order to reduce the effect of fade imho. The resistence to fade IS a component of a high performances car's braking system, or at least should be!
Aaaaargh - please stop with the 'brake fade' complaints. First of all, I don't think a lot of people will be 'tracking' their M5. M3's yes, but M5's are just too big and heavy. If you do track your M5, I don't want to pay sticker for your 'race ready' brakes. If you track your M5, upgrade the brakes, and don't force the rest of us to pay for something that we will never benefit from. I must say I agree with BMW's economics here.
As a number of people have said a number of times, brake fade is simply not an issue with street driving. Brake stopping power and feel are the most critical performance issues for anyone driving a street car. Give me brakes that stop in a minimum distance in a panic stop, then have good feel and modulation. Fade just doesn't matter at all unless you are racing.
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