Brake Wear Not Decreasing?

Kailec · 11-30-2017, 07:45 PM

Hey all, my rear and front brakes have been showing the same wear for a while now. Now I don't do crazy braking day to day but is it normal for it to not go down at all? Does it only go down in certain increments?

F32Fleet · 12-01-2017, 04:00 PM

Quote:

Originally Posted by Kailec

Hey all, my rear and front brakes have been showing the same wear for a while now. Now I don't do crazy braking day to day but is it normal for it to not go down at all? Does it only go down in certain increments?

Wouldn't worry about it. Once you trip the wear sensors you'll know.

Kailec · 12-01-2017, 11:32 PM

Quote:

Originally Posted by F32Fleet

Wouldn't worry about it. Once you trip the wear sensors you'll know.

I guess my main concern is that maybe something is wrong with the sensor? Maybe when they were installing winter wheels they weren't careful for example.

F32Fleet · 12-02-2017, 08:37 AM

Quote:

Originally Posted by Kailec

Quote:

Originally Posted by F32Fleet

Wouldn't worry about it. Once you trip the wear sensors you'll know.

I guess my main concern is that maybe something is wrong with the sensor? Maybe when they were installing winter wheels they weren't careful for example.

The wear sensor is a simple contact switch. As the pad wears the tip of the switch is exposed and trips when the coating is worn off exposing the metal tip which makes contact w/the rotor.

IIRC the counter for brake wear is just based on some algorithm.

hsk1610 · 12-02-2017, 08:45 AM

The wear indicator isn't very accurate either. I had 19,500 miles supposedly left on iDrive, and then the sensor got tripped and a trip to the dealer and reading the key said I had 1150 miles left on the pads.

Anthony3DHeli · 12-02-2017, 09:10 AM

Quote:

Originally Posted by F32Fleet

Quote:

Originally Posted by Kailec

Quote:

Originally Posted by F32Fleet

Wouldn't worry about it. Once you trip the wear sensors you'll know.

I guess my main concern is that maybe something is wrong with the sensor? Maybe when they were installing winter wheels they weren't careful for example.

The wear sensor is a simple contact switch. As the pad wears the tip of the switch is exposed and trips when the coating is worn off exposing the metal tip which makes contact w/the rotor.

IIRC the counter for brake wear is just based on some algorithm.

Quote:

Originally Posted by Kailec

Hey all, my rear and front brakes have been showing the same wear for a while now. Now I don't do crazy braking day to day but is it normal for it to not go down at all? Does it only go down in certain increments?

they last very long, mine took 15k miles on the rear and 25k miles in front to change, driving strongly, with a lot of stupid unnecessary braking !
indeed they are simply contact sensor, works fine to me.

11-30-2017, 07:45 PM	#1
Kailec Lieutenant Colonel 595 Rep 1,953 Posts Drives: 2013 328i xDrive Join Date: Apr 2017 Location: Toronto, ON iTrader: (0) Garage List 2013 328i xDrive [0.00]	Brake Wear Not Decreasing? Hey all, my rear and front brakes have been showing the same wear for a while now. Now I don't do crazy braking day to day but is it normal for it to not go down at all? Does it only go down in certain increments?
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12-02-2017, 08:45 AM	#5
hsk1610 Lieutenant 108 Rep 524 Posts Drives: 2013 328i xDrive Join Date: Sep 2013 Location: Chicago, IL iTrader: (0)	The wear indicator isn't very accurate either. I had 19,500 miles supposedly left on iDrive, and then the sensor got tripped and a trip to the dealer and reading the key said I had 1150 miles left on the pads.
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