New discs/pads for ...
 

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New discs/pads for old BR-M575, or replace with MT200?

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 IHN
Posts: 19694
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MrsIHNs bike, a gravelly/hybrid/flatbar roady thing, has a set of BR-M575 brakes. They howl like a motherf____r, and she wants me to do something about it. I thought I'd cured it by giving the discs and pads a good clean and a light sanding, but no joy.

Now, the discs and pads are, I bet, the originals from 2010 when she bought it, so I could replace them and see if that sorts it. But at, what, £30(?) all in for them, would I be better off just ditching the twelve-year-old lot for something like this:

https://www.ebay.co.uk/itm/125058294092?var=426126053094&mkevt=1&mkcid=1&mkrid=710-53481-19255-0&campid=5338723872&toolid=20006&customid=fjDNLWoSAAAAceaHSG1OrWT5ISEWAAAAAA

The bike is used for canal towpaths, cycle paths, etc etc. Nothing remotely gnarly.


 
Posted : 03/10/2022 11:06 am
 a11y
Posts: 3618
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I'd replace. At 12 years old I think they've done well and probably a matter of time before a leak develops.

Those rotors though. I ordered some cheap "centreline" rotors on eBay a few months ago for my hardtail. Arrived in branded SRAM packaging but at <£10/rotor they can't be genuine. Utter shite. Not a uniform thickness and caused bad pulsing and squealing within a couple of rides. Swapped for genuine Magura Storm HC rotors and brakes are now perfect.


 
Posted : 03/10/2022 11:13 am
 IHN
Posts: 19694
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At 12 years old I think they’ve done well and probably a matter of time before a leak develops.

This is my thinking.

Happy to take recommendations for basic-but-decent brakes. Ideally I want to fit them and then not worry about them for another 12 years...


 
Posted : 03/10/2022 11:18 am
Posts: 10225
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It might be your current callipers are already leaking and contaminating the pads.

I think the lower end Shimano hydraulic discs and meant I be ok. Otherwise you could look at the sram level, Clarks M2 or Magura MT4


 
Posted : 03/10/2022 11:59 am
 a11y
Posts: 3618
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Lower end Shimano are brilliant. I tried Clarks (not sure it was M2) but unimpressed with the flexy levers.

Keep an eye out for PSAs on here if you're not in a rush, there's often brake deals around. Latest was 4-pot Deores for £50 an end on CRC but no longer available. Merlin's usually got some deals if not using eBay for China-based lottery purchases.


 
Posted : 03/10/2022 12:33 pm
Posts: 739
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I'd stump up for fresh pads, maybe discs as well. Why? Because my twenty year old M525s are still going strong, whereas any newer Shimano brakes I've tried have been a microleaky, wandering bite pointy mess. Been really impressed with Magura of late.


 
Posted : 03/10/2022 1:40 pm
Posts: 9135
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I've been pretty happy with the BR-MT520 4 pots. Came stock on the Ebike, so stopping a combined weight of 105kg, they are well capable*

Only criticism is currently finding pads - Saint/Zee are compatible, but those dont seem that easy to locate, at least the brands Shimano ones aren't

At least one is reduced. Got to find the other though.

https://www.chainreactioncycles.com/shimano-bl-mt501-br-mt520-4-pot-mtb-disc-brake/rp-prod180791?gs=1&sku=sku695848&utm_source=google&utm_term=&utm_campaign=&utm_medium=base&gclid=EAIaIQobChMIlo7IyYrE-gIVQbDtCh2RogrVEAQYAiABEgJVlvD_BwE&gclsrc=aw.ds

Or keep the levers you have and try to get a bargain on a pair of calipers.

* Currently a microleak on the rear so im effectively stopping on front alone. So thats pretty much a fair recommendation i feel 😕


 
Posted : 03/10/2022 1:42 pm
 IHN
Posts: 19694
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Topic starter
 

Anyone want to have a punt at what model these might be?

https://www.halfords.com/cycling/bike-parts/bike-brakes/clarks-front-and-rear-hydraulic-brakes-160mm-rotors-268125.html

The picture looks like M2s but the description is rather non-committal, and the online chat people suggested I go into a shop and ask...


 
Posted : 03/10/2022 2:01 pm

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