I just put new rear rotors on and brake pads. The clips were still good so I reused them. How important is the thin metal plate that goes on the back side of each pad and between the caliper. It doesnt really clip on, it just sits there I think. Does it help put even pressure on the pads or something? The brakes fit fine without them I just want to make sure before I drive it.
Clip in brake hardware kit
- Thread starter GetBoost
- Start date
thats what I thought also. I ended up puting it together without the plates because the ones I have were kind of rusted. Anyone know if this will cause any problems?
May cause squealing. They are an anti-squeal plate. Plus it may help relieve spot stress on the pad (just a guess)
okay well I have no squealing so far. I went to get new ones, but they were not in any of the brake hardware kits (from advance, auto zone, and napa). I wonder if I can get just the anti squeal plate from toyota.
Ive always wondered, how does a <1mm piece of metal prevent squealing ? I know it helps sometimes but how ?
i suppose the squealing would be caused by high-speed vibration of the pad/like a chattering, except faster. the metal would give this vibration something to bounce back against and control it, or the stuff that holds the metal to the pad would absorb the vibration (and ultimately noise). just speculation, but i'd guess thats how the disc brake quiet goo works.
There are actually two plates. The silver metal shim, and a black plate with a slick (moly?) coating. The silver plate just provides a smooth surface for the black plate to contact. If you look at the pad itself, the backing plate is painted and pretty rough so the black plate would bind against it and not slide as desired.
So, if you don't have both plates, then adding or removing just the silver one won't make much difference.
You can buy the shim kit separately from Toyota. front shim kit 04945-24010 $28
So, if you don't have both plates, then adding or removing just the silver one won't make much difference.
You can buy the shim kit separately from Toyota. front shim kit 04945-24010 $28
I would imagine that they not only stop squeals, but they help to evenly distribute the pressure from the piston across the pad...I hope you don't crack a pad.
It does even the pressure out when brakes are applied, the hot spots is what really causes the squeeling. and ofcourse the brake pad being thin will cause squeeling also, so that plate actually thickins the pads in the back, so makes it look like to were its not as thin and at the point of squeeling time. lol i unno if anyone understood that. but yea
Indeed i thought those were to pull them off. Ofcourse rust is going to hinder that in due time but ok, the anti squeal plates have some sort of dampening coat to take away any leftover vibrations.
None of that stuff is necessary. Has anyone seen those wishbone springs on other cars? I've run without any shims for years with no problems. The piston can ride just fine directly on the pad. Squeal is far more dependent on pad material than anything else. The shims and goo are just insurance so people won't come back to the shop and complain. If you don't have them and don't want to buy them, don't worry about it.
Asterix
Asterix
Squeal and squeaks are two different things. Have you ever seen Chevy's that last as long as Toyotas. No. Sometimes one will last, but in general, they don't. So saying another manufacturer doesn't do something doesn't mean you don't have too, or it doesn't matter. Toyota is a very thourough manufacturer.
Dragging the pad on the rotor makes a light glaze over time.
But pad composition and rotor do heavily influence break squeal.
Dragging the pad on the rotor makes a light glaze over time.
But pad composition and rotor do heavily influence break squeal.