Speed Triple Judder Brakes

Steve fulcher · Jun 12, 2017

Hi all
I've a 2014 speed triple ,had it from new it's on its 3rd set of brake discs (all changed under warranty) now these ones are starting to judder ,they seem to be ok for 5-7k then develop a judder.
Any input from any one please ,I spoke to a brake disc supplier and he reckons the wheel is at fault (not machined properly) and it's wearing a "thin spot " in one of the discs.
What you all reckon?
Cheers steve

Rocker · Jun 12, 2017

Did the dealer say the disc where fecked or just change them to appease you?
Did they replace the pads every time ?
Are they stock pads?
Could it be headstock bearing?

Spin the front wheel with a pointer touching the disc and see if it is warped or not seated properly against the machined part of the wheel also they should "float" on the pins which can seize

t552 · Jun 13, 2017

I think its because the disc are made from sheet steel. like wood it has a grain structure. so after a while the grain develops and you get the on off. it seems heavy breakers don't get the problem, could it be because they are used to spread the metal around and the grain is not allowed to develop?
id move one disc around 90deg and see if that helps. or brake harder lol

crashin · Jun 27, 2017

I'd certainly be having a good look at the front wheel just to make sure its all fitted properly etc. its a pain i know but id wanna check the surface of the wheel that the disks fit to, this obviously means removing the disks etc, and is it both disks that are warping? Generally its hard prolonged braking that would cause warping or deformation as the brake rotors get extremely hot causing them to "soften" for want of a better term, which in turn allows the stresses from the pads to wear them unevenly. Does seem very poor mileage for this to have happened twice!!!