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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Thu, Nov-03-2016, 06:14:49 PM   #11
mrgicm
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Default Re: M4 Brakes on E46 M3?

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Originally Posted by nasieg View Post
Like I said, it can be a nice set up, but I learned the hard way that it's not worth the time and effort to reinvent the wheel, over something that is already available. I don't see how these are cheaper or better than the 996 Brembo's for example?

I don't want to knock these calipers, they might be awesome, but generally BMW does not make the best calipers in the business. Just look at the fiasco with the 135i Performance Brakes. They were made by Brembo, but BMW had them use phenolic caliper pistons, instead of ceramic, and then they had problems with them melting.

Be that as it may, I'd rather stick with something that is proven already, unless I see a huge upward potential in price or performance, which I don't with these. The only thing you will have is cool factor for being the only one with them.
As I said, I bought them as I also have an M4 and I will use them on my M4 if it woll not work on the e46, so its not a waste.

I will be installing them next week and I will see.

I also have a set of Porsche ZR18 6 piston callipers and will see if they will go better with the M4 discs.

Anyway I will try it and post the result good/bad so someone has futire reference )

What is your concern, what will be wrong with them?
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Old Thu, Nov-03-2016, 06:55:30 PM   #12
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Default Re: M4 Brakes on E46 M3?

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Originally Posted by mrgicm View Post
There is absolutley no problem in relation brake cylinder/piston size and works out fine.
Can you give us the numbers? Would be good to add it to the database, if it's actually better.
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Old Thu, Nov-03-2016, 07:34:59 PM   #13
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Default Re: M4 Brakes on E46 M3?

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Originally Posted by mrgicm View Post
As I said, I bought them as I also have an M4 and I will use them on my M4 if it woll not work on the e46, so its not a waste.

I will be installing them next week and I will see.

I also have a set of Porsche ZR18 6 piston callipers and will see if they will go better with the M4 discs.

Anyway I will try it and post the result good/bad so someone has futire reference )

What is your concern, what will be wrong with them?
No concern! I'm all for it, IF YOU are willing to put in the time and effort in to it. I just know from personal experience how much headaches it caused me to do something similar. Although it might be easier on this car, as there is more clearance for the brackets and you might be able to use stock rotors, which was not the case for me.

Anyway, good luck. Curious to see how it works out.
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Old Thu, Nov-03-2016, 09:34:12 PM   #14
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Default Re: M4 Brakes on E46 M3?

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Can you give us the numbers? Would be good to add it to the database, if it's actually better.
I would love to but I have no idea, he has them for about 6 months on the car and he tells me there are no problem and that he is happy with them.
Those are his words so I will find out for myself soon.

I will post all the steps as we go...
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Old Thu, Nov-03-2016, 10:37:38 PM   #15
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Default Re: M4 Brakes on E46 M3?

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Originally Posted by mrgicm View Post
I would love to but I have no idea, he has them for about 6 months on the car and he tells me there are no problem and that he is happy with them.
Those are his words so I will find out for myself soon.

I will post all the steps as we go...
When you get the parts in, can you get us these numbers?

-Brake pad width, front and rear
-Number and sizes of all pistons in the brake caliper
-Rotor diameter
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Old Thu, Nov-03-2016, 11:07:11 PM   #16
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Default Re: M4 Brakes on E46 M3?

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Originally Posted by mrgicm View Post
I would love to but I have no idea, he has them for about 6 months on the car and he tells me there are no problem and that he is happy with them.
Those are his words so I will find out for myself soon.

I will post all the steps as we go...
Yeah, I don't really care what someone's opinion of it is-- people are amazing good at justifying mods to them self. Plus, a lot of the possible issues are with things like behavior at the limit, which he may have never seen. Or maybe they have smaller piston volume leading to a twitchier pad making him think the brakes were more responsive.

In short, no numbers no care... and very likely a downgrade.
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Old Thu, Nov-03-2016, 11:56:47 PM   #17
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Default Re: M4 Brakes on E46 M3?

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Originally Posted by Obioban View Post
Yeah, I don't really care what someone's opinion of it is-- people are amazing good at justifying mods to them self. Plus, a lot of the possible issues are with things like behavior at the limit, which he may have never seen. Or maybe they have smaller piston volume leading to a twitchier pad making him think the brakes were more responsive.

In short, no numbers no care... and very likely a downgrade.
But it feels really good dude
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Old Fri, Nov-04-2016, 05:55:46 AM   #18
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Default Re: M4 Brakes on E46 M3?

Nice brakes. Yeah the brake bias way off you wont be able to track this car to the brim and wont be able to be competitive in endurance racing. Better off being boring and get 996 calipers like everybody else.
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Old Fri, Nov-04-2016, 12:16:21 PM   #19
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Default Re: M4 Brakes on E46 M3?

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Originally Posted by goldframe44 View Post
Nice brakes. Yeah the brake bias way off you wont be able to track this car to the brim and wont be able to be competitive in endurance racing. Better off being boring and get 996 calipers like everybody else.
Actually, on track is the one place they likely will benefit-- larger rotors means more cooling capacity means less fade. Still downgraded stopping distances, but... as least there's a benefit.

It's on the street where it's only a downgrade-- cooling capacity doesn't matter, stopping distances worsened and/or handling under braking made dangerous, pedal no longer optimal.
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Last edited by Obioban; Fri, Nov-04-2016 at 02:37:14 PM.
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Old Fri, Nov-04-2016, 02:02:48 PM   #20
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Default Re: M4 Brakes on E46 M3?

The fronts are no problem, it is the rear that there could be a problem as the calipper and size.
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Discussing M4 Brakes on E46 M3? in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)