I've been having the same issue but with kevlar pads, I've only done 4k / 8months on my discs and pads but it's a little difficult to ask a garage to remove them and hold on to the car while Godspeed verify if it's a warped disc.
Being a metrologist I've been taught in life there is uncertainty of error in all manufacturing industries and that there is a 99.73% there may not be a manufacturing fault but there is still a 0.27% chance it could be.
I know a few guys who work on CMM Machines who are also studying metrology and they admit them selves that if they do a 100 point check the disc is likely to pass then say doing 1000 point check (which is more time consuming and not cost effective) so there is still a chance of warping....
It could be possible due to deposits - uneven pad wear - hub - etc etc. cost could be endless (OEM hubs ~ £500 for the front)
When braking very gently do the pad bite and release? (more noticeable when driving at slow speed) I guess you could give it some stick on some b road and hard braking and see if it clears. Mine seems to get worse the warmer it gets.
A bit difficult not to have the handbrake up unless I roll the car on to the wall of my house - so its not an option for me.
let us know how you resolve it? I'm having mine replaced with Ross Sport disc and Hawks pads and it'll give me a chance to send the disc back to Godspeed and if they have warped Godspeed have advised me they would replace them - so to be fair that is good enough for me as i would save them when I eventually need to replace my discs again. - then again i paid double which isn't ideal. I'll probably need to vacuum seal them to stop them from rusting while in storage. :wallbang:
:smthumbup
