I know, the subject name doesn't make sense, right!?
I bought a hybrid bike in the summer which has hydraulic disks (Shimano BR-M355) and as soon as it gets wet, they are almost completely useless. Like dangerously ineffective useless. In the dry they are fantastic.
The bike has been back to the shop twice and they have fully cleaned out the system and replaced the pads (apparently), all for free, of course, but the problem persists.
Has anyone ever come across this before or have any suggestions? I guess I'll be taking it back in again but don't have total faith in their ability to fix it so I wouldn't mind being armed with a few suggestions (I'm new to disc breaks and so far, obviously, underwhelmed!).