7 votes

Disk brake squealing after bike shop changed my pads. Is it enough reason to ask them to re-service (for free)?

I'm assuming Avid BB7 style brakes and not hydraulic. I wouldn't bring the bike back. If you are using skewers on your hub, remember that any slight mis-alignment of the wheel in the dropouts will ...
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  • 566
7 votes

Disk brake squealing after bike shop changed my pads. Is it enough reason to ask them to re-service (for free)?

This isn't necessarily unusual for fresh disc pads. Give it a solid 20 miles. Then if you still have problems coming to a stop, take it to the shop and have them look at it. Even still, it's not ...
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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 ...
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  • 6,928
5 votes
Accepted

Disc brake maintenance

There are a number of simple things you can do to try improve performance before replacing the brake pads. Check the pads to see how worn they are. Here is an example of a new and worn pad requiring ...
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  • 8,767
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 ...
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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'...
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  • 561
4 votes

Bicycle is harder to pedal when standing

Something is dragging as you pedal harder. The most likely thing is that your rear wheel is moving so that the tire drags against the chain stay when you apply power. This is something that you'll ...
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  • 6,886
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-...
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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 ...
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  • 24.1k
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 ...
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  • 6,928
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 ...
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  • 10.7k
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 ...
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  • 6,928
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 ...
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  • 16.2k
3 votes

Bicycle is harder to pedal when standing

My guess is that your rear end is flexing and either: Rear rim is touching the brake pad, or Tire is rubbing the chainstay With the former, try checking your wheel alignment and loosing your brakes ...
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  • 572
3 votes
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Disk brake squealing after bike shop changed my pads. Is it enough reason to ask them to re-service (for free)?

I tend to run into the same scenario when I replace my own brake pads on my bike's TRP Spyre mechanical disc brakes. TRP is Tektro's high-end division, and I use Shimano B01S resin pads or anything ...
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  • 46
2 votes

Are all the Ultegra brake pads the same?

If you have carbon rims (with a carbon braking surface) you will need appropriate brake pads, so as not to damage the rims. You do not have to use shimano brake shoes- most (possibly all?) rim brakes ...
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  • 669
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. ...
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2 votes

Why are my disk brakes rubbing when wet and not dry?

I have notice the same phenomenon. If you keep washing with clean water the rubbing noise should go away. My best guess is that the water coming off the tires and falling into the brakes brings a ...
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  • 29.8k
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 ...
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  • 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 ...
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  • 12k
2 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) ...
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  • 8,962
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. ...
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  • 256
1 vote
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 ...
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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 ...
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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....
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  • 10.7k
1 vote

Unidentified clicking sound coming from front wheel area when performing an endo

Could it be the spokes rubbing over eachother? You can check the tension of the spokes by squeezing parallel pairs together. My fixie bike makes a clicking noise sometimes when the wheel needs ...
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  • 11
1 vote

Mechanical disc brake scratching noise

I've had a similar experience where I thought it was something to do with my rotor, or dirt in my system. Took it all apart for cleaning & adjusted many times to try and sort it with no luck. ...
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  • 244
1 vote

Troubleshooting Noise from Avid BB-7 Road Disc Brakes

To align the caliper, loosen the caliper bolts and bring the fixed cpad as close as possible to the rotor without rubbing. Then dial in the fixed pad so that it is as close as possible without rubbing....
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  • 551
1 vote
Accepted

Are all the Ultegra brake pads the same?

According to the Shimano groupset page, both brake options for the Ultegra Di2 6870 groupset (BR-6800, BR-6810) ship with the Shimano R55C4 pads, which are designed for carbon rims. So more than ...
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