Disc brakes that are well set up provide powerful, consistent stopping. But when you fit new pads or rotors, it’s essential that you wear off surface glaze and contamination before you rely on your brakes.
We’ve demonstrated the process on a mountain bike, but the same goes for any bike equipped with disc brakes.
Cleaning your rotors is a good place to startBikeRadar
One of the biggest mistakes riders make is putting new pads into a system where the rotors are already dirty with oils or other contaminants. Use disc brake cleaner and a clean rag to remove residue from the rotor before bedding in new pads.
Ignore our demonstrator’s naughty behaviour and make sure you wear gloves here.
2. Check new pads
Be sure to check that new pads are free from contaminants or damageBikeRadar
Ensure that you use clean and undamaged new pads, as anything else won’t bed in. Pads that have seen any use at all will have been through braking cycles. While they will work to a degree, you won’t get the full benefit.
3. Find a safe place
Be sure to give yourself plenty of space when bedding in new brakesBikeRadar
With your new pads fitted to your caliper, you need to find a long, gradual road descent with a smooth surface. Something that allows a 20mph roll with enough space and safety to perform some hard stops is ideal.
4. Drag and stop
Cycles of repeated stops and draggingBikeRadar
Everyone has their own method of getting new pads to bite. We like to build up speed, drag the brake for five or six seconds to build heat and then increase lever pressure until the bike stops. Six or seven runs should bring a good improvement.
5. Think about water
Adding water can speed up the processBikeRadar
Some people like to douse the caliper and rotor in clean, cold water after each stop cycle. We’re split 50/50 on this. None of our brakes feel different, so it’s up to you whether you douse or not.
6. Ignore early pulls
Your early brake pulls probably won’t feel greatBikeRadar
Early stops will feel poor, but the response should build with each cycle. The heating of the pad causes it to transfer some of the material to the rotor, keying the pad and rotor together and giving your brakes bite and improving modulation.
7. Adjust the lever
Some brakes feature useful bite-point adjustmentBikeRadar
You might want to tweak your brake lever so that it adapts to the feel of the newly bedded brake pads. Some brakes adjust automatically, but those with lever bite-point adjusters can also be fettled manually.
8. Dirt/road test
Once your brakes are bedded in you’re free to rip itBikeRadar
Now that you’ve bedded in your new pads, it’s time to hit the dirt and see whether or not they’re allowing you to hit turns harder and more deeply. And remember, it’s brakes that help racers go faster!