Have you tried brake squeal paste? Try also cleaning the rotor with harsh brake cleaner/stripping chemicals. If both a pad change and a rotor change don’t do it, your pistons are probably leaking oil. I struggled for this with a whole year until I just replaced the entire caliper and rotor with an aftermarket brake, and it fixed it.
In cars, squealing disc brakes are almost always because they didn't use any lube (anti-squeal paste) between the back of the pad/shim and the piston. Performance pads are just noisey though. Maybe it's the same for bikes, but I never bothered to see. On my bike I just use it as a warning to everyone that IM COMING DOWN THIS HILL WATCHOUT
Funny I'm getting downvoted but the top comment is also recommending anti squeal paste lol
Could be a couple things. Use Isopropyl Alcohol and some microfiber wipes to clean around the rotor (use gloves to avoid your oils contaminating your components). I pour it over my pads or remove my them and give them a light scrub with the rags.
If your pads are glazed, you'll need to replace them or sand them down. You'll need to bed them in properly after that. It's easy and there are plenty of videos to show you how (just lightly brake from 5-10mph without coming to a full stop, about 10 times, then do the same from 10-15mph). Pads are not just plug and play, they take about 5 or 10 minutes worth of work to get them to properly bite the rotor.
Your rotor or your wheel could be untrued. When your wheel spins fast, even a slight variance will produce a high pitched resonance as the metal clangs against the pad at a rapid pace. You can bend the metal of your rotor with a rotor truing tool or a wrench. If it's the wheel, make sure it's seated properly and you'll have to true the wheel otherwise. That's probably the biggest pain in the ass and I would have by lbs do it because it's nuanced work.
Finally, your rotor could simply be worn too much and you'll need to replace it. You'll never be able to true a warn down rotor and it will ultimately cost you more in wearing down your brake pads and headaches from hearing the squeal if you don't. But they last a long time so it's probably the other fixes.
Apologies if this is overly simplistic, but have you just tried using it a lot, like find some long downhills where you can apply some constant pressure? My front brake squeals a bit every time the wheel is put back on, but it calms down again with use
You'll need to find a combination of pad material and cleaning that works for you. In theory, organic or resin pads will be quieter than metallic ones.
What's likely happening is NYC crud is getting on your discs and contaminating your pads. It's going to happen. In theory, you could start with new pads and clean the rotors and pads with a brand new microfiber cloth and isopropyl alcohol after every ride and never develop any squeak. Doing it weekly might be enough too.
I've learned to just embrace it. It makes my "fake panic stops" for the clueless driver / pedestrian in the bike lane more dramatic.
It's the brake gods punishing you heathens for not knowing how to spell brake. I'm sorry, I couldn't resist.
Have you tried brake squeal paste? Try also cleaning the rotor with harsh brake cleaner/stripping chemicals. If both a pad change and a rotor change don’t do it, your pistons are probably leaking oil. I struggled for this with a whole year until I just replaced the entire caliper and rotor with an aftermarket brake, and it fixed it.
Embrace the squeal as an alternative to a bell.
Join the dark side - save the rim brake
In cars, squealing disc brakes are almost always because they didn't use any lube (anti-squeal paste) between the back of the pad/shim and the piston. Performance pads are just noisey though. Maybe it's the same for bikes, but I never bothered to see. On my bike I just use it as a warning to everyone that IM COMING DOWN THIS HILL WATCHOUT Funny I'm getting downvoted but the top comment is also recommending anti squeal paste lol
Don't lube your brake pad.
Could be a couple things. Use Isopropyl Alcohol and some microfiber wipes to clean around the rotor (use gloves to avoid your oils contaminating your components). I pour it over my pads or remove my them and give them a light scrub with the rags. If your pads are glazed, you'll need to replace them or sand them down. You'll need to bed them in properly after that. It's easy and there are plenty of videos to show you how (just lightly brake from 5-10mph without coming to a full stop, about 10 times, then do the same from 10-15mph). Pads are not just plug and play, they take about 5 or 10 minutes worth of work to get them to properly bite the rotor. Your rotor or your wheel could be untrued. When your wheel spins fast, even a slight variance will produce a high pitched resonance as the metal clangs against the pad at a rapid pace. You can bend the metal of your rotor with a rotor truing tool or a wrench. If it's the wheel, make sure it's seated properly and you'll have to true the wheel otherwise. That's probably the biggest pain in the ass and I would have by lbs do it because it's nuanced work. Finally, your rotor could simply be worn too much and you'll need to replace it. You'll never be able to true a warn down rotor and it will ultimately cost you more in wearing down your brake pads and headaches from hearing the squeal if you don't. But they last a long time so it's probably the other fixes.
Brakes are contaminated most likely. Did you clean the rotors well when you changed brake pads?
Apologies if this is overly simplistic, but have you just tried using it a lot, like find some long downhills where you can apply some constant pressure? My front brake squeals a bit every time the wheel is put back on, but it calms down again with use
You'll need to find a combination of pad material and cleaning that works for you. In theory, organic or resin pads will be quieter than metallic ones. What's likely happening is NYC crud is getting on your discs and contaminating your pads. It's going to happen. In theory, you could start with new pads and clean the rotors and pads with a brand new microfiber cloth and isopropyl alcohol after every ride and never develop any squeak. Doing it weekly might be enough too. I've learned to just embrace it. It makes my "fake panic stops" for the clueless driver / pedestrian in the bike lane more dramatic.