8
votes
What contributes to disk brake noise when wet, and how could I minimize it?
I've been obsessing over this issue for years now. I'm an 85kg rider who rides in all conditions in Scotland, so my brakes are frequently cold and wet.
I can confirm that specifically wet weather ...
- 81
6
votes
What contributes to disk brake noise when wet, and how could I minimize it?
To handle the last part of your question first, simply because I don't believe there is a solid answer, my opinion is that there is little difference in the potential for brake squeal between a 6 bolt ...
- 11.3k
5
votes
Accepted
Magura brake pad change: friction noise?
From where you're at now, this is what I would do:
Take out the wheel and pads.
Intentionally overextend the pistons with the lever. Clean them and the whole caliper thoroughly with alcohol.
Swab ...
- 88.2k
5
votes
Front disk brake squealing
Presuming you were thorough with your cleaning and the rotor was left with no residue of any kind (I achieve this on rotors I suspect of being oil or greased contaminated by either using brake cleaner ...
- 88.2k
4
votes
Mechanical disc brake scratching noise
I have found before that if you decide to do the quick release up tighter than usual it can tighten up the bearings a little too much and you might hear a fairly regular noise as the wheel rotates. I'...
- 601
4
votes
diamondback cobra 24 rear brakes squeal horribly what can I do to at least tone it down
Often this is the result of poor "toe-in." As the wheel turns while braking, the brake pads' mounting posts flex slightly and the pads buck against the rim and bounce back, causing the ...
- 30.5k
4
votes
What causes the different types of tire skidding noises?
The screeching that you describe is unlikely to be caused by the tyre skidding. It's more likely to be the contact between the brake pad and the braking surface causing the sound.
On an alloy-...
- 4,177
4
votes
Why are my disk brakes making a squealing noise?
I am a professional Bike Mechanic. Your rotors should be cleaned with isopropyl alcohol (or automotive brake cleaner if you must) and nothing else. Any sort of lubrication on the rotors including WD40 ...
- 81
4
votes
Accepted
Strange noises when using brakes
A supposition: that may only be applicable for Mavic wheels with 'QRM SL' bearings. The bearings preload for these wheels is done when tightening the wheel, with the QR lever or thru-axle. If the ...
- 24.7k
3
votes
Why are my disk brakes making a squealing noise?
You might try a different brake pad compound.
I had a similar experience using organic pads. Switching to a semi-metallic compound pad eliminated the slow speed grabbing and most of the noise. See ...
- 6,747
3
votes
What contributes to disk brake noise when wet, and how could I minimize it?
I found a few things that slightly mitigate brake noise on wet rides:
washing off sand and grit with a powerful squirt of water from a bidon (I did this when transitioning from gravel to tarmac)
...
- 9,818
3
votes
Rim-Brake pads creaking in still state
What you are hearing in my opinion is the squeak of the rubber pads gripping the rim. Notice that the pads do not close into and on the rim from a perfectly lateral, 90° approach. The path of the ...
- 11.3k
3
votes
Accepted
Can't figure out the origin of loud screeching noise
You are describing brake squeal caused by the brake pads resonating on the rim during braking. Wet rims often squeal worse than dry ones and the flour use reduced the friction somewhat which reduced ...
- 11.3k
3
votes
What causes the different types of tire skidding noises?
I've heard a wide variety of tire skidding noises over the years. From almost no noise at all to high pitched screeching as you describe.
There are a variety of factors that come into play when ...
- 24.3k
3
votes
Accepted
Unfixable brake disk rubbing
Noise after hard braking is normal. The rotor heats up and warps slightly.
When you got rubbing after reinserting the wheel, that shows you didn't align the wheel correctly. You need to be applying as ...
- 17.4k
3
votes
Brake noise at the start of each day
Symptoms - and this statement - "because I'd lost pressure..." point to contaminated brake pads. As identified by @Rеnаud in the comments, pads a porous and absorb fluids. The first bit of ...
- 53.1k
2
votes
Mechanical disc brake scratching noise
If the sound is occurring once per revolution it must be related to the disc being at least slightly out of true. With the bike off the ground rotate the wheel and look at the disc in the caliper. ...
- 75.9k
2
votes
Front disk brake squealing
You haven't mentioned checking the caliper alignment. If the pads and disc aren't exactly parallel the braking can feel weak, presumably as the disc is forced sideways by the pads. I've found that it ...
- 21
2
votes
Rim-Brake pads creaking in still state
I think it's either the stack of washers on the pad squirming together under pressure, or the pad pushing on the rim surface (assuming your assertion that nothing is touching the tyre). It looks like ...
- 13k
2
votes
Accepted
Why is my hydraulic front disc brake clicking?
The cause is the disc brake pad spreading spring contacting the brake rotor. Apparently the slight squeeze of the brake lever changes the geometry of the mechanism so that the spring is contacting the ...
- 21.3k
2
votes
Why are my disk brakes making a squealing noise?
After about two days if riding, the noise seems to have settled with the new brake pads. Maybe they needed to be broken in. I will post more updates.
- 171
2
votes
Why are my disk brakes making a squealing noise?
It can also happen if the disks or pads are not totally free of degreaser (e.g. DW40). Not sure you've considered it already but it is worth mentioning it.
2
votes
Roller Brake squeeking, even after body replacement
Only a small pool of potential causes remains since you've completely replaced the brake.
One reason bike brakes squeal sometimes is something about the mechanical condition of the system is allowing ...
- 88.2k
2
votes
Braking pads developing mirror finish and squealing after cleaning?
Lessons learned: organic solvents are bad for braking pads.
You can use whatever you want on the rotor, isopropyl is (imho) OK for the braking mechanism itself.
Pads are to be cleaned with hard brush, ...
- 1,006
2
votes
Brake noise at the start of each day
FYI the LBS replaced the rotor (again, not the pad which they said still isn't worn) -- and that seems to have fixed it.
The wear on the old rotor is visible but too small to quantify with only a tape ...
- 12.3k
1
vote
Purpose of fittings at the bottom of suspension fork?
My guess is it is a fastener and does not do anything useful except hold the fork together.
The right side of the fork usually contains the damper, with various adjustments. Usually, a fork has at ...
- 53.1k
1
vote
Why are my disk brakes making a squealing noise?
My brakes started to produce this noise when the pads were simply worn. My commuting at the time included a long hill that required brakes on descent, so they lasted for less than a year. The noise ...
- 8,134
1
vote
V-Brakes squeal very loud when braking
I'm working around the assumption that you are on a aluminium rim.
My opinion is that as long as there's no loss in braking power / consistency, then your braking componentry should still be fine.
...
- 256
1
vote
Front disc brake rattling noise
That noise is a concern. It certainly sounds like something is hitting the rotor, but if the rotor is out of true you should get a periodic 'ching-ching-ching' sound. The noise is more random which ...
- 75.9k
1
vote
Front disc brake rattling noise
The rotor might not be perfectly true. Although the shop should fix it as it's a new bike, do be aware that big MTB rotors get out of true really easily and at some point you just need to live with it....
- 17.4k
Only top scored, non community-wiki answers of a minimum length are eligible