These came fitted to my recent purchase and so far I am less than impressed, will be rebleeding this week but am also exploring options to improve. Would changing the caliper for a different one such as SLX improve things or would changing the lever end improve things? Looking at cheaper alternatives to buying a full set of replacement brakes. Are the different calipers and lever ends interchangeable or do they work only as a set?
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Shimano M575 disc brakes - improving??
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Posted 1 year ago #
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*eats popcorn*
Posted 1 year ago # -
Bleed em and add a bit more oil than you think you need in them. IE, when you're screwing the reservoir cap down it spills out of the side.
My Deores and my XT's got a lot better after that.
Pads are a bit variable too, Resins are good out of the box but don't last long, metal need a bit of a drag before they get "bitey".
Posted 1 year ago # -
TJ and Cynic-al are having a love in after last weeks events.
You can chop and change most shimano calipers and levers. However I would try a re-bleed before binning them just yet. Try a bottom up bleed (caliper to lever). Plenty of info on here, just search a bit.
What size discs do you have? 160mm can feel abit underpowered if you're 15+ stone.Posted 1 year ago # -
unless the lever just feels like mush, don't worry about bleeding them.
you've maybe got oil on the discs/pads, it's easily done, especially if the lad in the shop was a bit careless with the spray-lube.
take the pads out, rub them on some cardboard - see if much black stuff comes off.
clean the discs with lots of hot water, a little washing up liquid and an old toothbrush, and lots more hot water.
Posted 1 year ago # -
Rotors are 180mm front and 160mm rear and I'm 16 stone
They have gotten a bit better after a couple of long down hills and hence some heat through them but they are more along the lines of preventing acceleration during a descent than actually slowing me down, need a big handful to lock the rear wheel 
Posted 1 year ago # -
The biggest issue I had with these was my own stupid fault. In a bid to get my cassette clean I always ended up getting GT85 on the disc. A good wipe down with some IPA and some new pads - carefully bedded in by whizzing up and down the street - and now I really rate these brakes (for a budget brake anyway)
Posted 1 year ago # -
i had a set of these on my bike when i got it and they worked very well.would stop me when i wanted to be stopped but eventually my front gave up the ghost and decided to purchase some slx's but have tp say they were very good while they lasted.....
Posted 1 year ago # -
575's are the flip-flap ones right? Can go on either side...
I have one on my 1x9 winter bike & it gives great feel (easy to bleed) but not much power but maybe as mentioned here it's the pad / disc interface that's the issue. Haven't tried fresh pads or cleaning the disc as yet...
Posted 1 year ago # -
Get some IPA from your local Maplins,or a bicycle disc cleaner,and clean them as above,them smear them with mud and bed them in by getting up as much speed as possible,and stopping to a halt 10-15 times,the discs should get hot if you do it properly.This got mine working a treat.Be careful when using spray lubes on the bike,it's frighteningly easy to contaminate the discs.Good luck.
ianPosted 1 year ago # -
Sold quite a few of these, always need a bleed before i'm happy to let them out of the door. It's surprising how much air is included in a factory bleed, and how much better they feel afterwards.
Posted 1 year ago #
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