That 5-Day Stretch of Rear Pad Wear Had Me Questioning Everything

Last month I pulled my rear wheels off to rotate tires and the inner pads were down to 2mm while the outers still had 8mm left. That was after only 14,000 miles on a fresh set, and I do mostly highway cruising in Phoenix, not track days. Turned out the caliper slide pins were bone dry and one boot had split, letting grit pack in behind the piston. I spent a full weekend cleaning the bracket, replacing the pins and boots, and torquing everything to spec instead of just slapping on new rotors. The panic was justified because that kind of uneven wear can seize a caliper mid-drive on the I-10. Has anyone else seen inner pad wear that fast without a stuck piston, or is it always the slide pins that betray you first?

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emmasmith2mo ago

Two millimeters? Man, that is terrifying, especially on a highway like the I-10 where you can't just pull over safely. Those slide pins really are sneaky little jerks, one torn boot and your whole brake system is lying to you.

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christopher_craig2mo ago

Is it really that dangerous though, or just scary because it happened to you? I've had a caliper seize on me at 75 mph and honestly the car just pulled a bit, it didn't lock up or anything crazy. Two millimeters of pad is basically nothing, sure, but the real issue is usually the rotor getting scored to hell, not the car doing a dramatic stop on the I-10.

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