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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 Sat, Mar-18-2017, 04:13:12 PM   #1
Mr.Sono
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Default Brake longevity

I have 55k miles with original brakes. Planning to sign up for a track day. My main concern is my brakes going on me during track day. Should I just replace pads, pads and rotors or worry once they are truly gone. Its a 3 day course and if they go bad right away, I will miss the other days. Which will suck. Any suggestion?
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Old Sat, Mar-18-2017, 04:19:13 PM   #2
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Default Re: Brake longevity

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Originally Posted by Mr.Sono View Post
I have 55k miles with original brakes. Planning to sign up for a track day. My main concern is my brakes going on me during track day. Should I just replace pads, pads and rotors or worry once they are truly gone. Its a 3 day course and if they go bad right away, I will miss the other days. Which will suck. Any suggestion?
What's your actual pad thickness and are you sure they're OE? You still need to do a flush with high temp fluid.

At 55k my vote is change them
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Old Sat, Mar-18-2017, 04:23:10 PM   #3
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Default Re: Brake longevity

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Originally Posted by Drewster View Post
What's your actual pad thickness and are you sure they're OE? You still need to do a flush with high temp fluid.

At 55k my vote is change them
They are oe. I just did brake flush last year. Should I change pads only? Or rotors and pads.
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Old Sat, Mar-18-2017, 04:37:29 PM   #4
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Default Re: Brake longevity

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Originally Posted by Mr.Sono View Post
They are oe. I just did brake flush last year. Should I change pads only? Or rotors and pads.
What's the rotor thickness compared to the minimum that should be stamped on it?
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Old Sat, Mar-18-2017, 04:51:52 PM   #5
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Default Re: Brake longevity

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What's the rotor thickness compared to the minimum that should be stamped on it?
I got the gauge to measure it. What are the ranges?
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Old Sat, Mar-18-2017, 05:05:02 PM   #6
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Default Re: Brake longevity

Your rotors may be fine but definitely buy an extra set of pads
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Old Sat, Mar-18-2017, 05:22:28 PM   #7
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Default Re: Brake longevity

New pads and definitely flush your fluid.


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Old Sat, Mar-18-2017, 06:03:33 PM   #8
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Default Re: Brake longevity

I have flushed with racing blue fluid and installed ss line. I guess I'll just get pads. How long does it take to change the pads at the track?
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Old Sat, Mar-18-2017, 06:19:34 PM   #9
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Default Re: Brake longevity

Not long if you have done it before. And with the right tools. There is DIY guide for brake pads here.


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Old Sun, Mar-19-2017, 04:05:19 AM   #10
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Default Re: Brake longevity

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Originally Posted by Mr.Sono View Post
I got the gauge to measure it. What are the ranges?
People keep asking you the pad thickness.

Have you read the Tech Inspection sheet? Have you put your car in the shop for a Tech Inspection yet?
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Discussing Brake longevity 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)