How much mileage did you get out of your OEM brake calipers?

2016 4wd crewmax with 108k miles

I've been hunting down a grinding noise and it's coming from the front drivers wheel and appears to be the pads making contact with the rotor. I was planning on replacing the pads, rotors and pins anyways so I'm going to do that now instead of later. I suspect it's the crusty pins causing me issues.

Should I be prepared to do the calipers as well or am I just being overly pessimistic? They're pretty crusty on the outside, but it's what's on the inside that counts right?

 

I had a 2005 Tundra for 10 years and 110K miles.
Replaced pads and eventually rotors, but never a caliper.

2014 has 85K miles on it, replaced the pads at 80K even though I could have waited longer.

But I'm guessing that PA puts salt on the roads, that may be a factor in why yours are so crusty...

I'd try pads and rotors and see how it goes..
But I'm not a mechanic..

 

I rebuilt mine last summer at 226k because a dust boot was torn, and I wanted to inspect them after that many miles. They didn't need it, but I figured what the hell, may as well do it. I get bored and always have to tinker with something.

If I were you, before replacing the calipers, I'd remove them and Sandblast them (cover up dust boots, pistons, and any holes) then paint them with some high temp paint to help with salt corrosion, plus it'll help keep them cleaner since the surface is so porous and really gets dirty from brake dust. I got the cheap $30 harbor freight gravity fed sandblaster and some fine grit media from tractor supply for $11/50lb bag, and did a pretty big job with it. It worked great for the price, and something as small as those calipers would be a breeze. I only have a 20gal air compressor and it kept up the whole time.

For the pins and backing shims I used CRC Silramic brake grease. It's been amazing, not a peep out of my brakes after 20k miles.

If you're handy and have the patience, you could rebuild your calipers too. The rebuild kits are incredibly cheap from the dealership.

 

I would think your calipers are OK. The pins may be frozen in the calipers, as mine were, which will take much patience to remove....I doubt that the pads are frozen to the pins, but you never know...

 

I’ll agree with the pins comment. I had a scraping sound from the rear. Turns out there was rust/debris form around a pin hitting the pad and caliper simultaneously.

removed and all good.

 

If you change out the brake fluid regularity the chance of corrosion inside the calipers is minimized. Crud on the outside is not a problem unless it inhibits movement of the pads.

 

When buying a used vehicle this is one thing that tells me how well a vehicle has been maintained. Surprised at how many "Expertly maintained" vehicles have brake fluid that looks like coffee.

 

Great point, I keep forgetting part of the reason I bought this truck is the stack of maintenance history from the original owner. The fluid should have been changed at least twice at this point based on the records I have. So fingers crossed I'm good to go. I'm still planning to clean up the outside of the calipers too.