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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 03-30-2007, 01:19 AM   #1
Reedo302
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Soft brake pedal after pad change...?????

I just changed out my OEM brake pads and put on some Hawk HPS street pads, but now my brake pedal feels a bit soft. I drove it for a half hour, and it didn't really get any stiffer. The car stops well, but I just don't have as much resistance in the brake pedal. I also tried just pumping my brakes for 5 minutes, and that didn't do anything, really.

Any thoughts??? HELP!!
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Old 03-30-2007, 01:39 AM   #2
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Originally Posted by Reedo302 View Post
I just changed out my OEM brake pads and put on some Hawk HPS street pads, but now my brake pedal feels a bit soft. I drove it for a half hour, and it didn't really get any stiffer. The car stops well, but I just don't have as much resistance in the brake pedal. I also tried just pumping my brakes for 5 minutes, and that didn't do anything, really.

Any thoughts??? HELP!!
Low on brake fluid? Properly bed the brake pads?
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Old 03-30-2007, 04:06 PM   #3
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weird

i'm assumingg that you bedded the pads, but i dont see why the pedal would be soft

maybe some fluid leaked out air bubble?

i dont know what else would cause a soft pedal?

goodluck and hopefully its not a safety issue
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Old 03-30-2007, 04:18 PM   #4
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bleed it to be safe.
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Old 03-30-2007, 04:36 PM   #5
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bleed it to be safe.
what he said !
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Old 03-30-2007, 09:37 PM   #6
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bleed it to be safe.
The pedal did go back to a normal feel for the most part. I'm going to bleed them just the same to be safe. I might switch out fluid to some high-heat stuff while I'm at it.
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Old 03-31-2007, 11:57 AM   #7
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Anytime you put new pads in, you must bed them in. Your rotors have a thin layer of the old pad material on it and now you need to get a layer of the new pad material on it. Bite will be much improved.

bedding brakes here:
http://www.zeckhausen.com/bedding_in_brakes.htm
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Old 03-31-2007, 12:45 PM   #8
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Anytime you put new pads in, you must bed them in. Your rotors have a thin layer of the old pad material on it and now you need to get a layer of the new pad material on it. Bite will be much improved.

bedding brakes here:
http://www.zeckhausen.com/bedding_in_brakes.htm

i usaly just buy brand new rotor's when i do my brakes....probably switch over to stoptechs or something when i do mine.......no need for BBK for me........yet
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Old 03-31-2007, 12:53 PM   #9
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i usaly just buy brand new rotor's when i do my brakes....probably switch over to stoptechs or something when i do mine.......no need for BBK for me........yet
why? I'm sure there is plenty of life in those rotors, usually more than double or triple the life of the pads.
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Old 03-31-2007, 09:47 PM   #10
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I'm racing at MidAmerica Motorplex in Iowa next weekend, so the pads will be fried by Sunday. I'm putting new UUC gas slotted rotors on and new pads after it all, so this should just be a temporary fix.
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Old 03-31-2007, 10:17 PM   #11
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Notice: If you only replaced the pads and not the rotors as well, the rotors have over the course of time have adapted to the previous pads. When you install new pads, it takes some time for them to adjust to the uneven wear of the rotor surface.

I believe they wear unevenly going from the inner most point outward. So, in effect, they (the pads) need to wear down so the entire surface area eventualy matches the uneven wear of the rotors.

You're going to have to give it a few hundred miles and then, one day, she's gonna grab hard. At that point, you'll know the pads are fully bedded.

The only other way around this is to replace the rotors at the same time you replace the pads, but this is not very practical.

Don't force the wear process; it will happen soon enough. And, remember, give yourself a little extra stopping distance until such time that the pads have fully bedded themselves.
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Old 06-14-2014, 02:05 PM   #12
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Spongy brakes after pad change

Hey man that's great advice- I just changed my pads today and have more spongy travel in my pedal than before- I didn't change my rotors. Now I understand why the pedal feel is more spongy and the travel farther. I can see that the pads are not totally flat to the face of the rotors- the rotors have a small edge on them so I guess the bedding in process applies to me too then!! And my BMW dealer in Liverpool (UK) wanted 190.00 for the labour to change my pads. I don't think so!!
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Old 06-19-2014, 01:08 PM   #13
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Sounds like you might need to replace the rotors as well.


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