Had bought a set of cheap kevlar pads some years ago for the motorcycle. Absolutely horrible in frigid or wet weather... down right deadly in frigid and wet weather. They needed so much heat to work I was literally counting as high as seven seconds of brake application before they'd even begin to bite. I procrastinated swapping them out and eventually forgot they had that issue until I set out one frigid, damp early afternoon. As a workaround I started keeping some brake application going as a way of maintaining some heat in them between stops. That reduced the bite time down to maybe four seconds. But these are drilled disc rotors and not a lot of mass so, very quickly they cool. So I got more and more aggressive with brake application; getting well ahead of normal traffic then riding the brakes. Well, next thing I knew my front wheel tucked and I was watching my bike slide way down the road. When the pads finally got hot enough for initial bite, the front wheel instantly locked up and down went Frasier...
Bottom line is, if you experiment with your pads and find that they suck, DO NOT PROCRASTINATE WITH REPLACEMENT. I learned the hard way. 🤦♂️