High-G FJR Junkie!
Join Date: Jan 2013
Location: Millgrove, ON, CA
We're all going to have differing mileages on brake pads, very simply a heavy brake user will wear them out faster.... but when it comes time to replace I'd recommend a thorough cleaning of the pistons and other parts with brake dust accumulation.
To extend the pistons safely, remove caliper and leave the brake pads in place, squeeze your lever or pedal to push the pads together (no rotor) and the pistons will expose themselves, remove pads, clean with brake fluid and a toothbrush, once happy your caliper is clean, rinse everything with isopopanol to get rid of oily residues. Slip the pads back in and pry the pistons back, if this is the time for new pads, you'll need the pistons fully back.
I wouldn't use brake cleaner, as harsh solvents can harden the seals, not a big deal, but again, rinse with isopropanol if you do that.
If not done before, clean and re-grease the slides with hi-temp silicone brake grease and clean off any excess that may be on the rubber boot. I just clean the pad pins and leave them dry, theory being I don't like to attract brake dust. Some grease them, not wrong, just at tire change time, maybe take them out, clean them again... you want the sliding parts to all move freely as the caliper floats to keep it centered on the rotors.
If you feel any pulsing, might not be sliding freely, but also the rotor rivets may be crudded up a bit keeping them from floating as well... insert a dowel or other tool, rotate them to loosen up any accumulated crud, brake cleaner as a "pressure wash" if you like. If you can take the rotor and rotate it a bit forward and back, then your rivets are floating.... some may notice a "click" for a bit while riding and applying the brakes, all normal, that will die off as crud again starts to build.
All of this will help your pads wear as evenly as they can. That said, some find one pad in a pair may wear a little faster than the other, just means the caliper wasn't floating evenly, and I suspect from my experience there is a bit of a design thing involved as well, so don't sweat it too much if it's minor in wear difference.
Keep yer stick on the ice....
2014 FJR1300A - Root Beer (sold)
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1999 VFR800Fi - Pearl Shining Yellow