R32 Gtr Brake Issue

[Dave R31]

Hi guys

I have an r32 gts4 sedan that I put an rb26 into, did the brakes at the same time, gtr calipers front and back, new rda slotted rotors and qfm a1rm pads, new braided lines & fluid etc, brake master had a seal kit put through it. Had no dramas bedding the pads, and the car has been fine for the last three months of daily driving pulling up nicely. Had a metal on metal scraping noise start on the way home yesterday, checked the pads and the outer is down to the backing plate, inner has about 2mm on it . All other three corners look fine with the amount of meat you'd expect for 3500km's of driving, ie plenty.

I popped the pads out, the caliper has no leaks, and the pistons move in and out freely with hand pressure so I don't believe the caliper is seized, put in some old bendix pads I had to get me out of trouble.

Not being a brake expert, any ideas on what could have caused this?, I would have thought a seized caliper but that doesn't appear to be the case.

Dave

[Roy]

Do you use anything funky chemical wise when cleaning your mags?

[Dave R31]

Do you use anything funky chemical wise when cleaning your mags?

Nope, just car wash and warm water,

Found the factory akebono pads that came with the calipers, digging a screw driver over the surface leaves a light silver scratch, doing the same thing on whats left of the worn pads gouges the surface, they seem quite soft and crumbly

[blind_elk]

Maybe the RH caliper pistons are siezed, and are not working / wearing as much.

[Dobz]

just put a new set of pads in and see how long they last, if it happens again it's not the pads fault and all out of ideas. Does it pull to one side under heavy braking?