How to know if brake discs need replacing?

satish_141 · 07-11-2011, 08:48 PM

I know I need new front pads as the warning light comes on, but How to know if brake discs need replacing? Pls advice....

Tipper · 07-12-2011, 05:21 AM

Because they are really worn, rusty, have large lips on the rim or are measured to be below the minimum recommended thickness.

parapaul · 07-12-2011, 11:33 AM

Really what he said ^^^

The minimum disc thickness is usually only a couple of mm less than the new thickness, so if there's a lip that you can feel, chances are they need replacing.

07-11-2011, 08:48 PM	#1
satish_141 Lieutenant 95 Rep 478 Posts Drives: F30 320i Join Date: Nov 2010 Location: Reading iTrader: (0)	How to know if brake discs need replacing? I know I need new front pads as the warning light comes on, but How to know if brake discs need replacing? Pls advice....
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07-12-2011, 05:21 AM	#2
Tipper Private First Class 9 Rep 127 Posts Drives: 2007 E91 320d SE auto Join Date: Jan 2009 Location: Devon, UK iTrader: (0)	Because they are really worn, rusty, have large lips on the rim or are measured to be below the minimum recommended thickness.
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07-12-2011, 11:33 AM	#3
parapaul Colonel 118 Rep 2,216 Posts Drives: E91 330d M Sport Join Date: May 2010 Location: Stoke on Trent iTrader: (1) Garage List 2007 E91 330D MSport [0.00]	Really what he said ^^^ The minimum disc thickness is usually only a couple of mm less than the new thickness, so if there's a lip that you can feel, chances are they need replacing. __________________ Just how many Yorkshire sheep can you fit inside one exhaust?
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