Excessive rear brake pad wear - BMW 3-Series (E90 E92) Forum

patmo335 · 09-12-2012, 03:11 PM

BMW replaced the rear pads on my 2009 335i at 20K miles, and now they're replacing them again at 44K miles. The front pads are fine, and warranty is covering the cost, so I'm not concerned about the cost. I've never heard of rear brakes wearing that quickly. I use the cruise control a lot, and the rear brakes are utilized to maintain proper speed, but this seems like excessive wear. Is this normal?

HP Autowerks · 09-12-2012, 11:14 PM

Quote:

Originally Posted by patmo335

BMW replaced the rear pads on my 2009 335i at 20K miles, and now they're replacing them again at 44K miles. The front pads are fine, and warranty is covering the cost, so I'm not concerned about the cost. I've never heard of rear brakes wearing that quickly. I use the cruise control a lot, and the rear brakes are utilized to maintain proper speed, but this seems like excessive wear. Is this normal?

If you activate DTC, rear brakes are also used.

SlowAsHell · 10-03-2012, 01:50 PM

Quote:

Originally Posted by patmo335

BMW replaced the rear pads on my 2009 335i at 20K miles, and now they're replacing them again at 44K miles. The front pads are fine, and warranty is covering the cost, so I'm not concerned about the cost. I've never heard of rear brakes wearing that quickly. I use the cruise control a lot, and the rear brakes are utilized to maintain proper speed, but this seems like excessive wear. Is this normal?

I too am having the same problem - I changed my rotors and pads about a year ago and the rears are pretty much done yet the fronts still have a lot of life left. Did you ever find an answer on this problem?

HP Autowerks · 10-03-2012, 02:20 PM

Quote:

Originally Posted by SlowAsHell

I too am having the same problem - I changed my rotors and pads about a year ago and the rears are pretty much done yet the fronts still have a lot of life left. Did you ever find an answer on this problem?

It's the DTC system applying brakes to control lose of traction. Drive with it off and you will see extended rear brake life.

335okc · 10-03-2012, 02:24 PM

normal traction control uses rear brake too right? not just DTC ?

cvc 22349a · 10-03-2012, 03:02 PM

If you press your DTC button once and release DTC is activated and allows for a little more wheelslip; if you press and hold the DTC button DSC is deactivated which allows for more wheelship=reduced rear traction and extended rear pad life.

raceyBMW · 10-03-2012, 04:01 PM

And if you do thi expect increased wear of your rear tires...

neilvosko · 10-03-2012, 08:03 PM

traction control

neilvosko · 10-03-2012, 08:04 PM

add LSD

09-12-2012, 03:11 PM	#1
patmo335 Registered Drives: 2009 335i Join Date: Sep 2012 Location: paris, tn Posts: 2 iTrader: (0)	Excessive rear brake pad wear BMW replaced the rear pads on my 2009 335i at 20K miles, and now they're replacing them again at 44K miles. The front pads are fine, and warranty is covering the cost, so I'm not concerned about the cost. I've never heard of rear brakes wearing that quickly. I use the cruise control a lot, and the rear brakes are utilized to maintain proper speed, but this seems like excessive wear. Is this normal?
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10-03-2012, 03:02 PM	#6
cvc 22349a Lieutenant Colonel Drives: 335i Join Date: Sep 2007 Location: SF Bay Posts: 1,759 iTrader: (8)	If you press your DTC button once and release DTC is activated and allows for a little more wheelslip; if you press and hold the DTC button DSC is deactivated which allows for more wheelship=reduced rear traction and extended rear pad life. __________________ 2007 E90 335i, TiAg, 6AT, ZPP, ZSP, ZCW, 6FL, HD Quaife lsd, ETS fmic, GIAC tune, Dinan intake/exhaust, KW/M3/Meyle susp, Apex Arc 8, Mich PSS

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10-03-2012, 02:24 PM	#5
335okc Captain Drives: e90 335 Join Date: Feb 2011 Location: okc Posts: 629 iTrader: (0)	normal traction control uses rear brake too right? not just DTC ?

10-03-2012, 04:01 PM	#7
raceyBMW king of the hills Drives: 335i coupe Join Date: Dec 2006 Location: Denver, CO Posts: 2,480 iTrader: (1) Garage List 1994 530i [4.25] 2007 335i Coupe [4.07]	And if you do thi expect increased wear of your rear tires...

10-03-2012, 08:03 PM	#8
neilvosko Major Drives: 335i e92 FBO Join Date: Dec 2011 Location: miami Posts: 1,178 iTrader: (12)	traction control

10-03-2012, 08:04 PM	#9
neilvosko Major Drives: 335i e92 FBO Join Date: Dec 2011 Location: miami Posts: 1,178 iTrader: (12)	add LSD