[Armadaof1]

I've posted a few times on brake squeals, pulling to the right and uneven brake pad wear. After the last visit where the service rep assured me that nothing was wrong, I pulled the brakes (again) to inspect them.

I measured the pads and they're within specs (about a 1/4" of pad left). I'm still working to compare the rotor photos to see if I have the upgrade. And then I checked out the pistons.

Photos attached and you can see for yourself the chips on the surface of the pistons.

I'm guessing another call to the service guy, another trip in, and hopefully some resolution to all of this nonsense.

 

[92TripleBlack]

Probably some unskilled guy who worked on them damaging the caliper and figuring it wouldn't matter or be noticed. At least you found the problem.

 

[andy]

Either the guy that replaced the pads used a prybar to get the pads off, or possibly if the judder was bad enough, it might have caused this. That's my guess. Maybe I'll take a look at mine too.

 

[scr38]

This is not the first report of this problem. Pictures of damaged pistons have been posted before. Look here:
http://www.clubtitan.org/postlite1832-piston.html

 

[RougeQC21]

Is it being induced by heavy braking or bad engineering? (engineering as far as the piston material)

 

[scr38]

The damage is probably due to overheating. This could be caused by very heavy braking, combined with a poor pad material/design. There is some evidence that most of the rotor warping may be due more to the pads than the rotors. The new pads are a different compound.

 

[Armadaof1]

I can see how a year of repeated servicing for overheated/warped rotors would lead to additional stress on other brake system components.

I checked out the titan posts and it sounds like I'll be headed back to the dealership.

Still curious about what impact these chips have on the non-metallic piston's performance.

 

[blkjack]

And I thought getting the brake TSB would quash this issue. Holy Crap!!! Yet another thing to worry about. :crikey: