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Uneven brake pad wear

Posted: Fri Jun 08, 2012 1:58 am
by Jeo
Destroyed another set of pads at Wakefield on Monday, but the odd thing is that the outside edge of the outer pad is wearing significantly faster than the inner edge of the outside pad. Inside bad is wearing evenly.

Any thoughts as to what would be causing this?

Re: Uneven brake pad wear

Posted: Fri Jun 08, 2012 7:58 am
by Regie
Seized sliders??

Re: Uneven brake pad wear

Posted: Fri Jun 08, 2012 11:13 am
by mitch_f1
Is this on the front? Does the outside pad look like this:
Image

So they look thin at the top, and thick at the bottom???

I think I may have solved my problem by degreasing both slider pins (and holes), and then applying a small amount of grease to them. Ala: viewtopic.php?p=652390#p652390

If they are thin at the front and thick at the back, then you have a seized (or very dry) pin

Re: Uneven brake pad wear

Posted: Fri Jun 08, 2012 11:16 am
by manga_blue
I'd say your calipers are flexing. That's the problem with OEM calipers. Not much you can do about it to stay legal in Class 6 and CAMS Supersprints 2B.

Re: Uneven brake pad wear

Posted: Fri Jun 08, 2012 3:09 pm
by Hjt
I had the same issue as Mitch described, my front right lower slider pin had seized. Replacement part was bought thru mx5parts.co.uk easily enough.

Re: Uneven brake pad wear

Posted: Fri Jun 08, 2012 5:52 pm
by Jeo
Awesome, thanks guys. I'll pull it apart on Monday and post some photos to make sure.

Re: Uneven brake pad wear

Posted: Mon Jun 11, 2012 12:22 am
by Jeo
The worn one is the outer pad.
Image

Image

Image

I'll try new slider pins + grease first up but Phil's thread on the topic is rather interesting too.