Factory brake pad shims vs. Aftermarket shims
07-09-2007, 02:28 PM
#1
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Factory brake pad shims vs. Aftermarket shims
I recently installed the ATE PremiumOne pads on the rear and I noticed something I see frequently with aftermarket pads and I'm never sure about what to do. The ATE pads have (like many aftermarket pads) a pre-attached shim on the back of the pad. My question is that factory pads, in my experience, usually have two shims.
In the case of my rear pads, there were two on the inside pad, so what I did was to reuse the outer factory shim for the inside pad. My question is, when this happens what should I normally do? Is it ok to reuse one of the factory shims so they effectively have two shims, or is it better to just use the aftermarket pad as it came? What is the reason they sometimes have more than one?
In the case of my rear pads, there were two on the inside pad, so what I did was to reuse the outer factory shim for the inside pad. My question is, when this happens what should I normally do? Is it ok to reuse one of the factory shims so they effectively have two shims, or is it better to just use the aftermarket pad as it came? What is the reason they sometimes have more than one?
07-09-2007, 04:50 PM
#2
For reducing space
Use the ones that come with the new pads and make sure to use caliper grease on all the sliding parts
Use the ones that come with the new pads and make sure to use caliper grease on all the sliding parts
07-09-2007, 10:49 PM
#4
Take that back apart- use the set that came with the pads only
You are creating excess heat and other problems
You are creating excess heat and other problems
07-10-2007, 01:32 AM
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Originally Posted by 01tl4tl
Take that back apart- use the set that came with the pads only
You are creating excess heat and other problems
You are creating excess heat and other problems
07-10-2007, 01:58 AM
#6
The extra shims may be limiting the clearance of the pad to rotor- that overheat is what I am talking about. Glaze the pads good with just a minor amount of constant contact!
To be safe- obtain a factory repair guide and see what the clearance is supposed to be.
It is generally accepted for pads that come with shims pre-installed or a certain number included in pack- are meant for use as shipped, not to be added to OE shims
The replacement pads or backing plate may be thicker than OE- resulting in less shims required
To be safe- obtain a factory repair guide and see what the clearance is supposed to be.
It is generally accepted for pads that come with shims pre-installed or a certain number included in pack- are meant for use as shipped, not to be added to OE shims
The replacement pads or backing plate may be thicker than OE- resulting in less shims required
07-10-2007, 01:59 AM
#7
And my 01TL had 1 shim per pad on OE pads when I did the brakes.
Put Hawk HPS with their own preinstalled shims on it and caliper greased as appropriate- works great!!
Put Hawk HPS with their own preinstalled shims on it and caliper greased as appropriate- works great!!
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07-10-2007, 02:02 AM
#8
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Originally Posted by 01tl4tl
And my 01TL had 1 shim per pad on OE pads when I did the brakes.
Put Hawk HPS with their own preinstalled shims on it and caliper greased as appropriate- works great!!
Put Hawk HPS with their own preinstalled shims on it and caliper greased as appropriate- works great!!
interesting...i was surprised to see my pads double-shimmed. at least i'll know next time i change the pads to just use the shims included in the new set. thanks!
07-10-2007, 07:25 PM
#9
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That's interesting that they added a second shim in the later years. I never heard of earlier models having any noise issues.
What I wish I had done was to measure the thickness of the shims to get an idea if the aftermarket shim was in fact thicker than one factory shim. It's not worth taking anything apart again, I'll see next time I do brakes.
What I wish I had done was to measure the thickness of the shims to get an idea if the aftermarket shim was in fact thicker than one factory shim. It's not worth taking anything apart again, I'll see next time I do brakes.
07-10-2007, 08:11 PM
#11
You are right- its only the brakes- just wait and see!!!!
07-10-2007, 10:13 PM
#13
I have said it before and I will say it againBrain Fade- happens
Brake Fade- Bad
Wall- Worse
and as another member says
understeer= front of car hits wall first
oversteer= back of car hits wall first
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