New rotors look normal?

michaelalex17 · 10-13-2017, 10:59 PM

I just got new front rotors and brake pads installed on my car. I drove the car roughly 30 Miles Home and took a picture of both sides, do these look normal? What is that wavy pattern? I took a picture of the back rotor for reference which looks smooth and normal to me.

FlyingLow78 · 10-14-2017, 12:29 AM

Totally normal. Nothing to worry about. The attached photo is from a brand new M2.

michaelalex17 · 10-14-2017, 09:27 AM

I see. On the way home I did like 7 hard stops from 60 down to 10 to try and bed the brakes. Should I do this again or just drive it normally?

michaelalex17 · 10-14-2017, 09:56 PM

?

aBMWfan · 10-14-2017, 10:06 PM

Quote:

Originally Posted by michaelalex17

I see. On the way home I did like 7 hard stops from 60 down to 10 to try and bed the brakes. Should I do this again or just drive it normally?

Overthinking it. It's covered under maintenance and/or warranty.

Just wait until the rotors are actually worn out

michaelalex17 · 10-14-2017, 10:08 PM

I want to get the maximum performance out of them so I am wondering if I should try to bed them again. I thought I properly bed them but I am not sure if I should do the process again

aBMWfan · 10-15-2017, 12:28 AM

Quote:

Originally Posted by michaelalex17

I want to get the maximum performance out of them so I am wondering if I should try to bed them again. I thought I properly bed them but I am not sure if I should do the process again

You won't get maximum performance from OEM pads and rotors. That's not what they were designed for. Replace with aftermarket rotors and pads if you want much better performance on canyon roads, track, etc.

michaelalex17 · 10-15-2017, 08:06 PM

Quote:

Originally Posted by BenM4Dominate

Quote:

Originally Posted by michaelalex17

I want to get the maximum performance out of them so I am wondering if I should try to bed them again. I thought I properly bed them but I am not sure if I should do the process again

You won't get maximum performance from OEM pads and rotors. That's not what they were designed for. Replace with aftermarket rotors and pads if you want much better performance on canyon roads, track, etc.

I meant maximum performance out of the OEM pads and rotors not that they are the maximum performance option available in the market. Sorry if that was unclear. I want them to perform to their fullest potential and have them last as long as possible. So I want to know if I should try to bed them again. Thank you

kerkiraios00 · 10-15-2017, 08:11 PM

Yea mine looked the same when I picked up my brand new M3 two months ago

TurboM · 10-16-2017, 02:09 AM

"bed them again"?? They're fine man. You can speed up and slam on the brakes all you want, it's not going to change how they perform.

The cross pattern you see on them is from the machining process when they're made, completely normal and will go away in a couple hundred miles (normally driven miles that is).

FlyingLow78 · 10-16-2017, 07:58 AM

Sounds like you've already bedded them sufficiently. I wouldn't worry about it anymore.

michaelalex17 · 10-16-2017, 10:27 AM

Alright sounds good thank you all

FirstF80InSpace · 10-16-2017, 02:09 PM

One thing to keep in mind. Once I washed my car and it was parked for 3 days. The brake pad ended up rusting onto the rotor. It was stuck to the point that I actually had to give a good press of the gas pedal to break the rotor free from pad. I then had this rust build up on the rotor that caused vibrations when braking. Hard braking wouldn't get rid of it. I actually had to take the wheels off and sand off the deposits on the rotors.

This has never happened to any of the other cars I've owned.

10-13-2017, 10:59 PM	#1
michaelalex17 Brigadier General 596 Rep 3,386 Posts Drives: Manual Wagon Join Date: Aug 2010 Location: CT iTrader: (4)	New rotors look normal? I just got new front rotors and brake pads installed on my car. I drove the car roughly 30 Miles Home and took a picture of both sides, do these look normal? What is that wavy pattern? I took a picture of the back rotor for reference which looks smooth and normal to me. Attached Images __________________
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10-14-2017, 12:29 AM	#2
FlyingLow78 The G8X is a disaster. 🤮 931 Rep 988 Posts Drives: Not a BMW anymore Join Date: Dec 2016 Location: Europe iTrader: (3)	Totally normal. Nothing to worry about. The attached photo is from a brand new M2. Attached Images Last edited by FlyingLow78; 10-14-2017 at 12:55 AM..
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10-14-2017, 09:27 AM	#3
michaelalex17 Brigadier General 596 Rep 3,386 Posts Drives: Manual Wagon Join Date: Aug 2010 Location: CT iTrader: (4)	I see. On the way home I did like 7 hard stops from 60 down to 10 to try and bed the brakes. Should I do this again or just drive it normally? __________________
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10-14-2017, 09:56 PM	#4
michaelalex17 Brigadier General 596 Rep 3,386 Posts Drives: Manual Wagon Join Date: Aug 2010 Location: CT iTrader: (4)	? __________________
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10-14-2017, 10:08 PM	#6
michaelalex17 Brigadier General 596 Rep 3,386 Posts Drives: Manual Wagon Join Date: Aug 2010 Location: CT iTrader: (4)	I want to get the maximum performance out of them so I am wondering if I should try to bed them again. I thought I properly bed them but I am not sure if I should do the process again __________________
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10-15-2017, 08:11 PM	#9
kerkiraios00 Major 246 Rep 1,373 Posts Drives: '18 F80 MW M3 Join Date: Dec 2011 Location: Queens, New York iTrader: (0)	Yea mine looked the same when I picked up my brand new M3 two months ago __________________ 2018 F80 M3 ZCP Mineral White- Extended Shakir Orange - Full Suntek Ultra Wrapped - ///M Performance Spoiler - RKP Front Lip - RKP Side Skirts - Vorsteiner GTS Diffuser -AA Mid-Pipe-///M performance HAS kit - HRE P101 11 E90 M3 JEREZ BLK METALLIC ZCP SOLD
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10-16-2017, 02:09 AM	#10
TurboM Captain 252 Rep 674 Posts Drives: 2018 F82 M4 ZCP Join Date: Nov 2013 Location: Atlanta iTrader: (1)	"bed them again"?? They're fine man. You can speed up and slam on the brakes all you want, it's not going to change how they perform. The cross pattern you see on them is from the machining process when they're made, completely normal and will go away in a couple hundred miles (normally driven miles that is).
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10-16-2017, 07:58 AM	#11
FlyingLow78 The G8X is a disaster. 🤮 931 Rep 988 Posts Drives: Not a BMW anymore Join Date: Dec 2016 Location: Europe iTrader: (3)	Sounds like you've already bedded them sufficiently. I wouldn't worry about it anymore.
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10-16-2017, 10:27 AM	#12
michaelalex17 Brigadier General 596 Rep 3,386 Posts Drives: Manual Wagon Join Date: Aug 2010 Location: CT iTrader: (4)	Alright sounds good thank you all __________________
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10-16-2017, 02:09 PM	#13
FirstF80InSpace ///M You 344 Rep 619 Posts Drives: 2019 Porsche 718 Cayman S Join Date: Jun 2016 Location: Canada iTrader: (0)	One thing to keep in mind. Once I washed my car and it was parked for 3 days. The brake pad ended up rusting onto the rotor. It was stuck to the point that I actually had to give a good press of the gas pedal to break the rotor free from pad. I then had this rust build up on the rotor that caused vibrations when braking. Hard braking wouldn't get rid of it. I actually had to take the wheels off and sand off the deposits on the rotors. This has never happened to any of the other cars I've owned.
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