You don't have to use any noise reduction method. However, we usually put a little of the supplied grease to the specified contact points.
The shims are there to reduce noise. From that standpoint it's acceptable to use either the shims or the "brake quiet" rubbery compound. Clearly the rubbery compound doesn't do much as an insulator compared to a shim. Some manufacturers decided to use a 2-piece shim from the ice ages. Most others today use a one-piece integrated design, the good ones are riveted.
I'd keep the OEM shims on the shelf. And you have to make sure they're absolutely clean before putting them on the next set of OEM pads so the pads won't apply crooked on the slides.
In addition to absorbing vibrations that cause noise, the shims also act as insulators to slow down heat transfer from the pads to the calipers. So for the latter reason you should use the shims that come with the pads - but
never 2 different shims together.
The aftermarket stick-on shims can shift. Like the ones that come with the otherwise excellent Akebono ProAct ceramic pads (an OEM manufacturer for Toyota). If they shift later just take them off, otherwise apply a little of the grease in the supplied tube to the specified contact points.
I actually remove stick-on shims myself. IMO they suck.
Quote:
Originally Posted by Microman
Replaced the pads on the back of the 2002 Camry. Replaced with Ceramic pads, that had a metal backing plate attached of some kind. The current pads had two metal shims of plates on each pad. Guy at parts house said with these Ceramic pads, that I did not need to replace those thin shims, as this pad comes with its own.
Did just that, car brakes seem fine. No noise, brakes fine. Even asked if I should use some disc brake quiet stuff, and he said no.
Is this the norm? Is it ok, to discard the old shims, with these new pads?
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