just some food for future thought...
The slider pins if cleaned and lubed with proper quantity and type will extend the inner pad life. Going many years on other wise good pads will yield the situation yu see.
even with good boot/seals at the pins ...the soap based lube goes dry and this causes uneven wear between the inner and outer pads.
That's why I tend to service the brakes between changes and lube and also redress the pads.
I get more use out of the pad set over time and miles. Also there should be no reason to replace the calipers which is quite expensive. (part wise)
LT
