Hi Richard, yep, I agree with the experimentation, but just hoped someone may know what these standard pads are as a starting point? I did my first sprint of the year at Kames on Sunday, with my revised car set-up; new front brakes, negative camber suspension, new Kumho tyres etc, and all felt well! It was a cold, dry day (6 deg, overcast, and a strong wind making it feel much colder), and although rear end grip was poor, the car was noticeably braking well on the front end! I have no idea what rear pads I have in (no markings of any sort on them), but I do know they've been in the car for about 10 years now, so probably due for renewing in any case (some crumbling of the edges evident).