brake issue!!

B9M0W · 11-14-2012, 07:42 AM

Anyone know why my car car starts to smell like burned rubber or plastic when i step on my brakes hard? Only does it when i brake hard. And no, my engine bay does not have leaves causing that smell. Help!?!!

gpb · 11-14-2012, 07:55 AM

New brakes, still green?

cuiter23 · 11-14-2012, 09:48 AM

This was an issue I had before. Unless your brakes are brand new, even then it shouldn't have that much of a scent.

Figured out that I had a cover gasket leak as well as a valvetronic leak. Get that checked out if you haven't already. I had the exact same smell that you described.

Also, try driving your car uphill and see if you have that scent.

B9M0W · 11-14-2012, 07:07 PM

My brakes aren't new, will get new ones 3 months from now. I will definitely check the cover gasket and other things..thanks for the advice!

B9M0W · 11-17-2012, 06:24 PM

Quote:

Originally Posted by cuiter23

This was an issue I had before. Unless your brakes are brand new, even then it shouldn't have that much of a scent.

Figured out that I had a cover gasket leak as well as a valvetronic leak. Get that checked out if you haven't already. I had the exact same smell that you described.

Also, try driving your car uphill and see if you have that scent.

Did it uphill and downhill nothing changed unless I was breaking hard :/ .... Same when I have the car parked and step on the brakes hard and I don't smell anything. This is very odd for me

pistolpete5113 · 11-17-2012, 07:50 PM

I would take a peek at your brake rotors. If they show signs of hot spots or have a dark bluish color to them, they could have gotten excessively hot. Also, if you have a front brake caliper that is stuck or frozen, it could cause the other front caliper to work extra hard when braking. With 70% of the braking coming from the front brakes, and having one sticking caliper, that is a lot of pressure on the one working front caliper.

B9M0W · 11-18-2012, 08:00 PM

Quote:

Originally Posted by pistolpete5113

I would take a peek at your brake rotors. If they show signs of hot spots or have a dark bluish color to them, they could have gotten excessively hot. Also, if you have a front brake caliper that is stuck or frozen, it could cause the other front caliper to work extra hard when braking. With 70% of the braking coming from the front brakes, and having one sticking caliper, that is a lot of pressure on the one working front caliper.

Thanks man. I'll check it out. But it looks like im not losing engine oil so it could possibly be the brake lines or something thats related to brakes.

11-14-2012, 07:42 AM	#1
B9M0W First Lieutenant 27 Rep 342 Posts Drives: e90 Join Date: Dec 2011 Location: NJ iTrader: (0)	brake issue!! Anyone know why my car car starts to smell like burned rubber or plastic when i step on my brakes hard? Only does it when i brake hard. And no, my engine bay does not have leaves causing that smell. Help!?!!
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11-14-2012, 07:55 AM	#2
gpb First Lieutenant 5 Rep 393 Posts Drives: 335i Cabrio Join Date: Sep 2012 Location: Atlanta iTrader: (0)	New brakes, still green?
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11-14-2012, 09:48 AM	#3
cuiter23 Major 81 Rep 1,094 Posts Drives: 2023 G87 M2 6Spd Join Date: Jul 2012 Location: Canada iTrader: (1) Garage List 2007 BMW 328i [6.00]	This was an issue I had before. Unless your brakes are brand new, even then it shouldn't have that much of a scent. Figured out that I had a cover gasket leak as well as a valvetronic leak. Get that checked out if you haven't already. I had the exact same smell that you described. Also, try driving your car uphill and see if you have that scent. __________________ [SOLD] 2007 E90 328i - Titanium Metallic l 19" VMR V710 l H&R Trak+ Spacers l M-Sport Rear Bumper l Mtech Rear Lip Spoiler l Hamann Front Lip l Eibach Sportline l AA N52 Signature Exhaust l OEM Blacklines l MTEC V3 AE l 6000K HID l Nokya 7000K Fogs l MTEC License Plate LED l Interior LED l 15% Tint l BlackVue DR380G-HD + PMP 2023 G87 M2 6Spd - HEA Package \| OEM M Performance Carbon Wing
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11-14-2012, 07:07 PM	#4
B9M0W First Lieutenant 27 Rep 342 Posts Drives: e90 Join Date: Dec 2011 Location: NJ iTrader: (0)	My brakes aren't new, will get new ones 3 months from now. I will definitely check the cover gasket and other things..thanks for the advice!
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11-17-2012, 07:50 PM	#6
pistolpete5113 New Member 0 Rep 11 Posts Drives: 2008 335xi coupe Join Date: Oct 2012 Location: Denver, co iTrader: (0)	I would take a peek at your brake rotors. If they show signs of hot spots or have a dark bluish color to them, they could have gotten excessively hot. Also, if you have a front brake caliper that is stuck or frozen, it could cause the other front caliper to work extra hard when braking. With 70% of the braking coming from the front brakes, and having one sticking caliper, that is a lot of pressure on the one working front caliper.
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