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View Full Version : Passenger Rear Pad Worn Down to the Metal



mecheng
06-28-2016, 08:41 AM
My brakes started making a grinding noise Friday on my way to the cottage and it's persisted until now. After taking a look all around this is what I was greeted by on the passenger rear wheel:

Image 1 (http://imgur.com/JgAgIu6)

Image 2 (http://imgur.com/B9kTBjv)

Image 3 (http://imgur.com/WcJ1ehS)

Image 4 (http://imgur.com/3HqSaUy)

All the other pads and rotors are fine, so I have NO idea how this could have happened. I'm going to bring it to the dealership tonight and insist they replace these under warranty, this is obviously a mechanical issue and not simply excessive wear and tear.

Is there anyone else out there that's had this issue and can chime in on how to mitigate its recurrence in the future?

EDIT:

Upon further investigation it looks like the rear brakes sticking and wearing prematurely isn't uncommon. I'm going to lean quite hard on the dealership to repair this under warranty. Will report back.

msjulie33
06-28-2016, 09:00 AM
Consider also a sticking parking brake if side to side is uneven

doverosx
06-28-2016, 09:18 AM
Your sliders seem fine, not stuck compressed. Have you been getting your car's brake service done? I don't see how this is a warranty issue, perhaps you've never owned a sports car in Canada before?

Fiat500USA
06-28-2016, 09:22 AM
How many miles? That's going to be key. Brake pads worn down on one side is a common malady on all cars, especially if you live where it snows. There are a bunch of reasons for this. Pressure washing calipers and getting water in the slide pins happens. The rubber boots deteriorate over time and also can let water in. Good idea to change them when you do brakes. A caliper piston or parking brake cable can stick, too and keep the caliper from releasing. Probably the most common thing I've seen is the brake pads can get stuck in the bracket from rust, dirt or worn out hardware. Brake hoses also can collapse and not let the caliper release. Your dealer should be able to figure it out as it is really Brakes 101.

OnTheFenceAbarth
06-30-2016, 08:30 AM
How many miles? That's going to be key. Brake pads worn down on one side is a common malady on all cars, especially if you live where it snows. There are a bunch of reasons for this. Pressure washing calipers and getting water in the slide pins happens. The rubber boots deteriorate over time and also can let water in. Good idea to change them when you do brakes. A caliper piston or parking brake cable can stick, too and keep the caliper from releasing. Probably the most common thing I've seen is the brake pads can get stuck in the bracket from rust, dirt or worn out hardware. Brake hoses also can collapse and not let the caliper release. Your dealer should be able to figure it out as it is really Brakes 101.
Speaking of common brake issues, is it also common for a rotor to be rusted? I noticed one day while detailing my rims that my front passenger rotor was rusty on the surface where it contacts the brake pad while the other 3 were not. About a week later I noticed that the rotor was free of rust and looked just like the others. I don't believe the front passenger brake was failing to engage properly, though I don't tend to brake hard so I may have missed it...