Just found this under a search, so being lazy and posting in here.
My brakes have started to judder under braking, the faster the speed, say slowing from 60 for a roundabout on the dual carriage way near me and the wheel shakes quite badly.
It is def disk runout IMO as I have experienced this b4 (bloody BMW)
Now the car has only done 7200 miles so Seat should change these discs under warranty shouldn't they? if so should the pads be done as well?
Never experienced Seat Warranty so hoping that as the car was bought from them last month they are gonna sort this.
I never noticed on the test drive as the disks did not get hot enough as it was only a blast up and down the dual carriageway and as said runout is worse the hotter the disks get.