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View Full Version : Anyone seen this? (Pics) one sided brake pad wear.



streamline
04-19-2007, 08:46 AM
Heard grinding the other day so i took off my rear caliper. When i removed it and inspected the pads i noticed the outside pad was in almost new shape and the inside was worn to the shim. Anyone run into this? The slider seem to slide ok so not sure where to go from here.

http://www.audizine.com/gallery/data/500/3359IMG_0472-med.jpg

http://www.audizine.com/gallery/data/500/3359IMG_0474-med.jpg

superman_006
04-19-2007, 08:48 AM
Yes ... your caiper sliders.... one is frozen
the two parts that hold the caliper is should easly slide in and out

onemoremile
04-19-2007, 09:00 AM
Tyrol Sport has a brake caliper stiffening kit that will help. Try just lubing the caliper up and working it loose.

streamline
04-19-2007, 09:03 AM
The sliders both move fine

Burntaudi
04-19-2007, 09:13 AM
Caliper might not be retracting if the sliders are fine.

superman_006
04-19-2007, 09:14 AM
Your caliper not moving freely is the only thing that can do it, the sliders should move as if they are on bearings

if the caliper piston was sticking it will wear both sides

If the person would put it together last time had put together with the inside of the rotor chewed up it woud also do that

Militant-Grunt
04-19-2007, 09:40 AM
Did you at any point remove the caliper bracket? It might not be screwed in correctly.

streamline
04-19-2007, 10:48 AM
no didnt remove the caliper bracket ever. What is a good way to troubleshoot to see if it is a caliper or a carrier problem.

benzteck
04-19-2007, 11:52 AM
If your slides in and out with no problem your caliper is not retracting completely cuasing the inside pad to contact the rotor more than it should and wearing the pads unevenly and not to be a dick or anything superman_006 but it is most definately possible. streamline, when you drive down the road without applying the brakes the the car pull the the side that that pad is on?

streamline
04-19-2007, 12:06 PM
i didnt notice any pull to either side, but i will pay more attention and make certain this afternoon

superman_006
04-19-2007, 12:20 PM
Think about it, when the piston pushes in, the entire caliper also pushes the oppisite way (if the sliders are free). When the caliper slides in it pulls the pad on the non-piston side against the ouside of the rotor with equal pressure (unless the sliders or the inner pad are hanging). Even if the piston stayed stuck out it would apply pressure on both sides
http://i130.photobucket.com/albums/p276/superman_006/caliper5.jpg

benzteck
04-19-2007, 12:37 PM
you can have a small amout of pressure on the inside pad pushing it up against the rotor causing it to wear more than the outside pad. What you are saying makes all kinds of sense but for some reason the caliper sticks and causes the inside pad to wear I've seen this issue prabably 20-25 times. It doesn't make sense but it happens

streamline
04-20-2007, 03:31 AM
so benztech if that was the case what would be the fix, a new caliper?

jaredpgh
04-20-2007, 07:52 AM
If the person would put it together last time had put together with the inside of the rotor chewed up it woud also do that

...and if you never removed the caliper bracket then you have never replaced the rotors... check the inside surface of that rotor for general crappy-ness.

benzteck
04-20-2007, 09:19 AM
Ya you would need a caliper or re-build yours if they sell a re-build kit, or you could just go big brakes

superman_006
04-20-2007, 03:23 PM
http://autorepair.about.com/library/faqs/bl694h.htm

streamline
05-02-2007, 09:53 PM
My rear rotors arrived today. well definitely figured out why my pads worn unevenly, thought i checked both but i guess not, oh well at least i know whats wrong.

http://www.audizine.com/gallery/data/500/3359IMG_0486-med.JPG

here is my brake helper

http://www.audizine.com/gallery/data/500/3359IMG_0488-med.JPG

superman_006
05-02-2007, 10:50 PM
Na na na na.....I told you so

streamline
05-03-2007, 07:53 AM
yea yea yea, :)