Every time i do a trackday i burn a set of rear pads out what could be wrong or is this normal, Callipers not sticking and never use handbrake on trackday.

Madteg, what kind of pads are they on the back.

I have done a number of track days and activity days in mine and never got close to using a set of pads at the front, never mind the back - OEM pads on MK indy (BEC).

cheers
Craig

whats the braking bias like? is it very heavy on rear?

are the discs grooved and ported on the rear? this can cain pads i use the green pads which last a few days on the track before i kill them.

too much braking

Willing to bet rakes are binding when hot due to fluid expansion.