I'm getting some slight judder on braking felt through the steering wheel. Worse at higher speed. It's not very pronounced and doesn't seem to be getting any worse. At slow speeds it almost feels like the disk has a sticky patch or the wheels are oval.

I had proper warped disks before on a previous car with a faulty caliper and it's nowhere near as bad as that.

Do disks still get ground in garages or do they just fit new ones?

These are pretty new (6 months) and they've only done 6k so I'd rather not have to replace if I can.

I had something similar, I put this down to a touch of partial glazing. Seems to go away after a hard stop or two.

With the cost of disks these days it's usually more economical to fit new ones. Sometimes fitting new disks doesn't sort the problem, we had a BMW in recently, the customer was another garage, they had fitted a set of disks/pads - it developed a vibration, so they fitted genuine disks and pads and it still had a vibration.

We skimmed the disks on our brake lathe which adjusts itself to the car and the customer reported back that it was sorted.

Cheers will go for a run when it's quiet and see if an Italian tune-up will scrub off the crud.

I hardly touch the brakes most days.

I only have experience on Mk1 Octavias but having chased a problem with the braking system it turned out to be wishbones, even though the garage was adamant they were fine and would pass an MOT. My symptoms were vibrations under braking together with shaking of the steering wheel. If you doubt the discs are at fault then try having the wishbones/bushes replaced,

Due a service within the month so I'll get him to check it out properly.

Just to update, doing some high speed hard braking on a quiet road seems to have fixed it. Much reduced. A few more stoppies should do the trick.

yeh i usually do this once a month 80-90 mph then hard steady breaking to 40mph then along for another 3-4 miles then same again works wonders.