Disc brake shudder

[blind]

When I gently brake , front or rear , I get a shudder from the discs. Also makes a horrible noise.

 

What causes this and how can I solve it?

 

Didnt use to do it,just the last 2 rides or so.

 

Disc bolts are still tight and pads are not worn down. They are quite new.

[droo]

Sounds like pad contamination - you've got oil on your rotors. Search the tech forum, you'll find all the answers in here.