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-   -   new rotors turning blue/yellow/purple (https://xoutpost.com/bmw-sav-forums/x5-e53-forum/98546-new-rotors-turning-blue-yellow-purple.html)

jsoto 10-16-2014 11:02 AM

Can't be sticky calipers...I can see 1 going bad but all 4 at the same time

JCL 10-16-2014 12:26 PM

Agreed, not all calipers would stick at the same time.

Overheated, either through the bedding procedure, or possibly because of the specific combination of pad and rotor the OP or shop selected.

If the OP chose the pad and rotor and supplied them to the shop, there isn't much hope for satisfaction. The shop would typically send the customer back to where they purchased the parts from. This is a risk you take if you buy them yourself.

If the shop supplied the parts, it is easier since they cover both risks, the parts and the install.

four.8is 10-16-2014 12:28 PM

Quote:

Originally Posted by TiAgX5 (Post 1012607)
:thumbup:

Seems more and more techs don't know/don't care about doing things right, yet the shops charge top dollar.

I've learned to DIY EVERYTHING!

My last brake job cost $420 for everything. $1k is big money for replacing pads/rotors (for that money I would have expected THEM to bed and inspect

600$ rotors
400$ pads
65$ sensors
20$ fluid

Labor :150$ per axle R/R -300$ total
Brake flush-150$

That's over 1500$ labor included!! And to mess up the rotors and be ignorant about it it's pretty jacked up.

The reason I didn't DIY is the lack of spare time at the moment.but if I knew this would happen I would have taken a day off just to change the brakes.

Now I'm wasting time , taking a few hrs off work to bring the car back to the shop , have it checked out, take it back home...pfff:stickpoke

four.8is 10-16-2014 12:35 PM

Quote:

Originally Posted by JCL (Post 1012625)
Agreed, not all calipers would stick at the same time.

Overheated, either through the bedding procedure, or possibly because of the specific combination of pad and rotor the OP or shop selected.

If the OP chose the pad and rotor and supplied them to the shop, there isn't much hope for satisfaction. The shop would typically send the customer back to where they purchased the parts from. This is a risk you take if you buy them yourself.

If the shop supplied the parts, it is easier since they cover both risks, the parts and the install.


Rotors are rotors, the pads are carbon/Kevlar/ceramic compound

People have used them with stop tech rotors on numerous application with no problems
This looks to me like the pad is biting more on one side than the other and looks like improper installation ...if they overheat , they color the whole rotor not just the lower portion right?...what do you think?:/

TiAgX5 10-16-2014 01:11 PM

The pads are only contacting the outer area on pics one and two.

I would foward those to Z'hausen and ask what the cause may be.

four.8is 10-16-2014 01:28 PM

Jacked the car up, spin the wheels , obviously they're not spinning freely...looks like the pad is touching the rotor.what are the chances that the pads were too thick to begin with?

The shop manager told me he'll check everything once again make sure everything is seated correctly but he said it might be the break in period and after a little more driving it might go away...(bs if you ask me)... and other than checking there's nothing he can do since I supplied the parts..

Joshdub 10-16-2014 01:33 PM

That really sucks. I'd shoot stoptech an email with those pictures and see what they think.

Also if you decide to work on it yourself and want some helping hands, feel free to PM me and I'd gladly come help out.

JCL 10-16-2014 01:34 PM

Quote:

Originally Posted by four.8is (Post 1012627)
Rotors are rotors, the pads are carbon/Kevlar/ceramic compound

People have used them with stop tech rotors on numerous application with no problems
This looks to me like the pad is biting more on one side than the other and looks like improper installation ...if they overheat , they color the whole rotor not just the lower portion right?...what do you think?:/

Rotors aren't just rotors IMO, the differences will be in the material, and in the cooling fins. I don't think of rotors as commodities. In those pictures, it looks like they got hotter at the inner circumference, not the outer. That would cause me to check the cooling fin design.

I didn't know what pads and rotors you were using, but I would go back to the supplier and ask if they have seen anything similar.

I would check the brakes to make sure they were assembled properly.

I would check the rotors to make sure there was no preservative/residue left on them during assembly.

I would not claim that they were improperly assembled unless I had something to base that on. That may include overly aggressive bedding in.

And I would be reluctant to pay $1500 for aftermarket parts installed by an independent shop not liable for parts supply, if that is what happened.

Last time I checked my dealer, brakes for my 3.0 X5 were around $900, both axles, all OEM parts including rotors, new sensors, with a loaner vehicle. That is called a value service package, applicable to vehicles of a certain age (the E53 qualifies) I would expect the 4.8 to be slightly more. YMMV.

Good luck.

four.8is 10-16-2014 02:13 PM

The reason I didn't go OE is the horrible dusting properties of OE pads, plus the slightly more appealing style of the stoptech rotors...
I didn't mean that rotors are created equal, reason why I paid almost double on them than what NAPA is selling...I meant iron is iron, the difference is how each pad compound reacts to it...
I specifically mentioned to the manager to wash the coating off the rotors with brake cleaner or soapy water(per Dave zeckhausen recommendation)..
Some rotors require some driving to wear of some other types if coatings then be ready for bed in...
Yes, I might have been a little aggressive going 3 times instead of 2 sessions but the coloring on the rotors appeared after the very first session...I stopped to check pad material transfer onto the rotor after each run..I've never seen something like this before...I can't even find a single picture with the exact or similar pattern my rotors developed...
All the heat damaged ones look like blue cheetah prints on the rotor...weird

sandbagger 10-16-2014 02:27 PM

is it both sides or just one?
Looks like it could be a caliper that is spread?
We use to bend the ones on the race car all the time, if we got 3 weekends out of a pair we were doing good. actually use to melt pistons too.

was the wear even on the old pads?


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