Originally Posted by Horton

be related to hearing a single clack sound when applying the brakes?

Originally Posted by landyacht318

I've had this issue on every new set of brakepads I've bought.

It is the outside brakepad doing the rattling. The one that does not slide.

The two tabs which hand over the caliper, need to be tamped down.

My haynes manual says to remove the pad and hammer lightly the tabs down.

I've had better results by
Placing a flathead screwdriver inbetween the pad and rotor, and lift the pad up 1/16 to 1/8 of an inch.

Then start the vehicle and rig a way of holding the brake pedal down, or get an assistant.
With the pad held tight to the rotor by the brakes get a hammer and hit the tabs until they rest on the caliper. They bend easily. Do not hit the cast iron caliper. Not much force is needed, just precision of strike.

No more rattles.

Also I recommend while you have the caliper off, take a wire brush to the grooves that the inside brake pad is designed to slide in and out on. and apply a light coat of high temp grease.

Originally Posted by blackvan

Simplest way is to install the pad and caliper then put a big screwdriver or pry bar between the hub of the brake rotor and the bottom of the pad to keep the bottom side pushed up hard against the caliper. Now hit the tabs on the top with a hammer until the pad is held tight.