Are you all seeing rear pad wear like this???

[Black]

Pad wear on the rear. Both sides look just alike.

 

[16plati]

View attachment 29231

Pad wear on the rear. Both sides look just alike.

Thts bizarre, my fronts were f’ed up at 17,000 miles and when they removed them from the caliper, one split in half and the other had full width fractures in the pad. Then they found out I had two bad 4x4 actuator assemblies. Fixed everything and they tried to get me paying for pads and resurfacing rotors. Long story short, they determined faulty pads led to warped front rotors so I got all new stuff for free. I never had rear brake issues though..

 

[Trainmaster]

Sliding properly? No rust under any mounting hardware?

 

[LokiWolf]

Warping rotors seems to be a thing on these trucks... Ours are definitely warped, and it is on my list for next time it goes in for an oil change. They will be doing it on their dime.


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[Plati]

Pad wear on the rear. Both sides look just alike.

Both sides of ONE rotor (outside & inside pad) or Both rotors (outside pads)?

If one end of pad backing wasn't sliding due to metal tang interference or other reason?
Should be able to tell when disassembling. I always take a file to the new pads to clean up any extra fabrication remnants.

On the warped rotors ... there is a school of thought that rotors don't warp.
I guess you're not in that school. I've never had a warped rotor so I dunno.
BUT I do believe they can be warped by rapid temperature drops. FWIW

 

[16plati]

Both sides of ONE rotor (outside & inside pad) or Both rotors (outside pads)?

If one end of pad backing wasn't sliding due to metal tang interference or other reason?
Should be able to tell when disassembling.

On the warped rotors ... there is a school of thought that rotors don't warp.
I guess you're not in that school. I've never had a warped rotor so I dunno.

Ok, maybe warped isn’t the correct terminology. There were several relatively deep scours in the rotor faces from dirt and debris stuck between them and the pads.

 

[Black]

Did not get a chance to pull the wheels. Weather was finally decent so I was unwinterizing my chainsaw, string trimmer, and DR Field and Brush mower.
Got the wild hair to check the brakes on the truck as I bought it about a year ago. No issues just figured I would take a peak.
I can only see the outside pad on each side and the wear is pretty much identical.

Both sides of ONE rotor (outside & inside pad) or Both rotors (outside pads)?


On the warped rotors ... there is a school of thought that rotors don't warp.
I guess you're not in that school. I've never had a warped rotor so I dunno.

No need to argue symantics one mans warped rotor is rotor runout to others but we’re all talking the same thing.

Guess, I’ll pick up some pads for the rear and rotors since I don’t know if these have been turned or not.

Trying to decide if upgraded brakes for the rear are warranted. Or if a the NAPA Premiums will be just fine.
Still trying to decide between Baer and EBC for the fronts when they need swapped out.

 

[powerboatr]

at 9700 miles all pads measured 8 mm at oil change
15000 miles all were at 7mm
22000 measured 8 mm yep ..
29000 all got the GREEN check mark with no measurement indicated
so i am thinking the 7 mm was a fluke

i dont hold my brakes or ride them, i coast alot if in traffic
but once i stop, i hold the pedal for 20 or so seconds then roll enough to put the hot caliper on another section of the rotor to prevent warping
current mileage is 30,800

 

[1955moose]

Rear rotors or drums rarely get warped/ out of specs. The reason is the fronts handle 70 percent of the stopping force. The rears are more like an equalizer. With only 30 percent of the stopping duties, their like rear deck speakers in a car, more a fill, than a total sound. Don't get me wrong, you need that 30 percent, but the heat build up is much less on your rears. The only exception, is if your Ebrakes are dragging, but even then, it's the small shoes in the hat part of rotor that suffers. Can't see from your pics on my phone, but uneven wear can be either from a non sliding caliper, a warped rotor, more than the customary .004 out of specs, or from a botched install. I've seen customer's trying to install their own pads, and put the backing plate towards rotor. Unbelievable grinding.

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[gixer2000]

I would clean/lube the slides and pins.

 

[Black]

I would clean/lube the slides and pins.

As always with pads getting done. Just weird that both sides of the truck are nearly identical in wear.

 

[Black]

Looks like this wear is normal. I was perusing the NAPA site and the photo (granted usually a stock photo) shows an extreme taper on the ends of the pads.
Watching this install video at about 4:40 they remove the old pads and they are worn almost exactly as mine are.

So this must be a pad design. Not seen it before but I have no noise or stopping issues so I’ll just keep an eye on it.

 

[16plati]

Good little bit of info to know there, @Black

 

[Parkspremier]

Have you guys noticed quite a bit of groves in your front and rear rotors or have they worn pretty even and smooth? I need to replace my fronts for sure and I thought I had ordered a set of powerstop z36 brakes for the front of my expedition but as my luck would have it...I ordered the rears. Short story long I was going to return them but after seeing what shipping was going to cost ($105.49 at the cheapest) I will place them on the shelf and have them for when I need them.

 

[ManUpOrShutUp]

I haven't had to change my rear pads since I bought my truck over 60K miles ago - and they were done before the dealership took it on trade. In any case, they're wearing evenly.

 

[Plati]

Watched that video, stopped it ... Still hard to see what's going on with those pads on my smartphone. Don't get mad at me for saying this but I don't buy that is normal wear. Even if a pad looks tapered in a video ... The guy doesn't point at it and say its normal. How could a tapered pad be normal? I've never seen one. Has any of the other Forum members seen it routinely?

Grooves are not good either. I've had pad grooves and matching rotor ridges on brakes that have problems and are to be replaced. Not the end if the world just not optimum. Best situation is pad and rotor flat with even wear.

 

[Trainmaster]

The groves in rotors are much worse when used with poor quality metallic pads. Some of the cheap ones have very hard metal embedded in them. Many of the parts-store rotors are also horrible castings. I saw one where you could make out the outline of a recycled half-melted bolt in the iron. There's some real junk in auto parts coming from China. Don't be surprised that so-called "premium rotors" are just cheap China castings machined and drilled here.

Haven't had my rear pads off yet, but I'm with Black; I don't see how or why tapered wear could be normal. No reason why it wouldn't be designed to wear evenly. Look over the whole thing carefully. I'll suspect there was something wrong with the mounting clips that kept the pad from seating properly, or that the caliper piston was worn so it was cocked.

If the pistons are plastic, it's likely that wear could cause that.

 

[Black]

"MrSticker, post: 342565, member: 52783"]Watched that video, stopped it ... Still hard to see what's going on with those pads on my smartphone. Don't get mad at me for saying this but I don't buy that is normal wear. Even if a pad looks tapered in a video ... The guy doesn't point at it and say its normal. How could a tapered pad be normal? I've never seen one. Has any of the other Forum members seen it routinely?

Unless the pads are tapered from the get go which appears to be the case. Plus I find it strange that both sides of my truck have the identical taper and the taper is the same in the video.
Would be strange for improper wear to be identical on two calipers but anything can happen.

 

[Hamfisted]

That is an anti-chatter cut in the pads. All high quality pads have the same cut. You should see the same cut on the front and rear pads.

 

[Adieu]

Not really, no