What causes the rear brakes to wear out faster than fronts?

[Yooformula]

I replaced EVERYTHING last summer and for some reason the rears were completely worn down past the pad material. they are evenly worn and teh ebrake is not sticking but I dont know what to look for to find the issue. The fronts have over 80% left!! This is on my 03 Yukon btw.

[BAD LS1]

Proportioning valve?


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[nismodave]

E-Brake Drifting?

Video i took on a ride with Yoosof.

http://www.youtube.com/watch?v=HF5_rTUc-y4

[Yooformula]

lol those guys must be bored as hell to figure out how to drift that big ass tank.

[Yooformula]

Proportioning valve?

thats what I am guessing but now to find a dealership that has a parts dept open tomorrow.

[MoCkiN U]

bumper to bumper?

[Reverend Cooper]

the calipers,pins and pistons move in and out fine? proportioning valves go bad on chebby's? wow

[GTSLOW]

E-Brake Drifting?

Video i took on a ride with Yoosof.

http://www.youtube.com/watch?v=HF5_rTUc-y4

classic!

[Yooformula]

the calipers,pins and pistons move in and out fine? proportioning valves go bad on chebby's? wow

calipers were replaced last year and under warranty so i got a new set but on one side the pin was pretty much welded in place BUT both sides, both pads were ground down. The rears also had alot of brake dust the last few months but I thought it was due to the aggressive pads.

[BAD LS1]

Besides aren't the e-brakes internal bands on the inside of the rotor hub on k-trucks?


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[Yooformula]

/\ yes.

[spooln30]

Check the rubber brake hoses. If they are colasped they may be keeping pressure at calipers causing them to wear out as fast as you stated. I have seen this happen before.

[Yooformula]

Check the rubber brake hoses. If they are colasped they may be keeping pressure at calipers causing them to wear out as fast as you stated. I have seen this happen before.

double checked the hoses and still good, going to have to get a proportioning valve on monday..

[spooln30]

How did you check the hose?

[Reverend Cooper]

yeah it doesnt need a proportioning valve

[Yooformula]

yeah it doesnt need a proportioning valve

so what does it need? i cant afford to put this back together with the same issue and burn up another set of rotors/pads.

[BAD LS1]

Yeah I don think yoo does 2 min long brake stands with it to smoke just the rear brakes. They are working harder than the front for a reason. So a miss match in pressure makes the most sense or the calipers never release. I.e frozen.


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[wrath]

Left foot braker?

For some reason, GM made the rear brakes on the 99-04s 1/2 tons grab first... like way before the fronts. I don't know if it was an attempt to keep people from losing control or what. So if you're a light braker (coast with just enough pedal pressure to turn the brake lights on and scrub off a bit of speed) then you'll burn through rears a lot faster than fronts. If you're a typical Brookfield soccer Mom and wait until the last second to hit the binders then it's not an issue.

If you don't believe me, pull the ABS fuse and go drive around in some snow. The rears lock up super easy.

[Reverend Cooper]

i would guess a caliper issue before a proportioning valve issue myself and the other fact that aftermarket pads are shit period

[Dr.Buick]

Most of it has to do with rust build up not letting pads move off the motors. I clean off all rust and lube under the little ships on brackets. And on the whims before the pads go on.

And if you did not lube the calipers that can be part of the .problem.
Ps to fix this problem to went back to drum brakes on the rear again