Odd Break Wear?

[Serenity24]

Hey guys I'm looking for some input. Just got my 2017 Ecoboost Vert back from the dealer after getting some work done. I asked them to check my brakes because I was starting to get some squeeking. They said I need a rear brake job and that the pads were 3mm. I decided I was gonna do it myself because a brake job is pretty easy. Well I took off the pads and im a little stumped. The outer edges on the left and right are worn down but not the center. Is this normal and im being a total noob or is this not right? Any input would be greatly appreciated. As far as info on my car its a 2017 Ecoboost Convertible with 56,000 miles and without the performance package. This is the only used car I've ever bought. I only buy new but it was a rental fleet car and i got a really good deal and I figured with an extended warranty I could handle any problems it threw my way. Sorry if I'm being a total noob and this is perfectly normal break wear.

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[Blufc3s]

What condition are your rotors in? Any pics of those?

 

[Serenity24]

Rotors seem to be ok was gonna have them machined regardless but ill attach some pics. They're smooth with no gouges from what I can tell.

 

[Zrussian13]

I just checked my pads last weekend for wear and they look like yours. I don't think its wear on the outer edges but an oddly shaped pad. Mine looked similar but with less wear to the portion of the pad that makes contact with the rotor. I was surprised that the contact patch doesn't go the full length of the pad. The brembo pads look the same. I have a pp1 car.

 

[Serenity24]

Thanks for the input!!

 

[cmxPPL219]

Hey guys I'm looking for some input. Just got my 2017 Ecoboost Vert back from the dealer after getting some work done. I asked them to check my brakes because I was starting to get some squeeking. They said I need a rear brake job and that the pads were 3mm. I decided I was gonna do it myself because a brake job is pretty easy. Well I took off the pads and im a little stumped. The outer edges on the left and right are worn down but not the center. Is this normal and im being a total noob or is this not right? Any input would be greatly appreciated. As far as info on my car its a 2017 Ecoboost Convertible with 56,000 miles and without the performance package. This is the only used car I've ever bought. I only buy new but it was a rental fleet car and i got a really good deal and I figured with an extended warranty I could handle any problems it threw my way. Sorry if I'm being a total noob and this is perfectly normal break wear.

Correct to the above, that the outer edges have purposely less material than the centre of the pad - that's how the OEM pad is for this application.
However, in the last picture you attached with the pad lying on its side, it shows tapered pad wear, which is a form of uneven pad wear. This could indicate the sliders are somewhat seized, or the abuttment clip(s) [where the brake pad "ear" rests on] could also be causing the pad to stick as well.

 

[cmxPPL219]

I'm on side with Rapid Red, in that rotors are "relatively" inexpensive in the big picture, that I also prefer changing them out for new, as opposed to resurfacing/turning them.

Although this process allows you to have a smooth surface for the new pads, the downside is that it will just be more prone to warping; A rotor is essentially a heat sink. So, by shaving off a light layer of metal to expose a new finish, what also happens is you are also reducing the amount of material that would otherwise be absorbing the heat / thermal energy, thereby increasing the likelihood of warping.

 

[Rapid Red]

I'm on side with Rapid Red, in that rotors are "relatively" inexpensive in the big picture, that I also prefer changing them out for new, as opposed to resurfacing/turning them.

Although this process allows you to have a smooth surface for the new pads, the downside is that it will just be more prone to warping; A rotor is essentially a heat sink. So, by shaving off a light layer of metal to expose a new finish, what also happens is you are also reducing the amount of material that would otherwise be absorbing the heat / thermal energy, thereby increasing the likelihood of warping.

Deleted my post cause you explained the uneven wear better & simpler then I had.

OP take cmxPPL219 at his word, knows what he is talking about

Pep

 

[NightmareMoon]

The factory pads are just tapered like that.

 

[cmxPPL219]

Deleted my post cause you explained the uneven wear better & simpler then I had.

OP take cmxPPL219 at his word, knows what he is talking about

Pep

Haha you actually did a fine job explaining it as well imo - I understood it

 

[cmxPPL219]

For Reference, these are the applicable OEM Ford Motorcraft replacement pads for models with that size rear rotor. (Other model and trim combos like Premium/ GT Perf Pkg etc., have a different rear vented rotor and pad / caliper, although upon close inspection, all versions look the same, they're not)
Notice how:
-They have cut/chamfered friction material ends
-They are not tapered when new (compared to the used pads posted by OP)

So, taking out a tapered pad is indicative of something not right - not just for this application, but generally speaking.

 

[StangTime]

I am curious why they are shaped like this. It looks as though once you wear the pads down beyond the chamfered area you end up with even more pad/rotor contact. The wear indicator would still be far from indicating pad replacement.

 

[Jetnoise]

The factory pads are just tapered like that.

Many / most replacement pads are as well.
Is there a supplier that isn't?

 

[NightmareMoon]

Many / most replacement pads are as well.
Is there a supplier that isn't?

Yes some aftermarket pads are square.

 

[Jetnoise]

Yes some aftermarket pads are square.

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