What does this brake pad wear indicate?

If inclined, read my ‘oops I did it again’ post for history. Just looking for a seasoned pro to maybe clue me in on the mechanics of why my brake pads look like this! This is just one pad on the outside edge, but both ends of the outside pad look like that, and only the bottom of the inside pad. About 15 degrees angled wear.

The most material is taken off the outside top, followed by outside bottom, followed by inside bottom (least), with inside top just abrasion. Not a huge difference in material taken off but a noticeable difference. The ‘angled wear’ I’m referring to is the grey area at the end of the pad. The orange is antiseize.

here’s a pic of both. about 1/16th inch more material on the outside pad.

DRIVABILITY ON THE CAR: It seems like when I drive and use my brakes, that there is a certain point on the rotor or components that is like a bump, and it clicks when I brake, faster if going faster. So imagining the 360 degrees my axle is spinning, it makes perfect sense that the pads would be wearing like this, they are encountering a definite obstacle. (I think) But I can’t see it at all on the rotor. That is what it FEELS like. I can feel the impediment (feel the click) in the brake pedal. Mild groaning around corners from that wheel. This was not a slow onset problem, like the bearing going, going, gone. This rotor/brake was completely fine one day and screwed the next. I believe it to have been caused by not having the tire on correctly (snugged up to the rotor), and lugs only hand tightened when I lowered it. I saw the tire go to an angle when this happened.

Visually looking for any inconsistencies in the hub/rotor itself is negligible except for a tiny bit on one portion of the hub, and it’s so slight that I’m not sure.

And, I did what I WASN’T SUPPOSED TO DO – I put caliper lube on the pins last time I undid the caliper (last week, after this happened). That’s not the CAUSE of the problem, though. I just don’t think I helped. Couldn’t find silicone paste. spray, yes. paste, no.

I was able to compress the piston itself with a humongous pair of pliers…pinched off the brake line and when piston compressed, brake fluid drained into my home-made catcher bottle. Trying to visualize how the caliper could cause this is somewhat difficult.

Also did a side to side and top to bottom shake on the tire while the car was up – looking for failed tie rods or ball joints – didn’t get looseness. I sat there spinning the rotor for awhile, and heard a very slight friction noise coming from the back of it where the axle goes into the tire, around the bearing vicinity. This was only noticeable because it would happen on one particular portion of the 360 degree rotation.

THANKS IN ADVANCE FOR REPLIES!! 🙂 trying to keep my spirits up even though I have a long trip to take soon and so far have NO IDEA what is happening with my car. sucky. As a final note, the way the car is driving right now, is a major safety issue, that’s why I’m concerned. It’s not just like a noise you hear and don’t worry about. I downshift into first gear now just to avoid using my brakes at all, in fact I’m biking everywhere I need to go for now unless necessary to drive. Haven’t taken the car on the freeway.