Taking SCARY out of used bikes, one bike at a time.
I mean better-stopping power. There are ware indicator lines for road brake pads, and when they are short or gone, it is time to replace them.
It’s straightforward to do so, and you can do it on the bike but recommended to remove the wheels. (shown is off the bike) There is a small screw on the backside of the pads. Just back them off or take them out. But don’t lose them. They are super tiny. If dropped, they are GONE!
Side the pads out towards the back and insert the new ones. Keep in mind that there is a right and left, and you will see an R or L on the pads. (Right side of the bike is as you were riding it) Once inserted, put the screws back in.
Keep in mind that they may now need to be adjusted. You can adjust the cable tension or adjust the screw on the top. The idea is that both pads will hit the rim evenly when pulling the lever. For road bike instruction, I suggest viewing a Part Tool video.