So my latest idea of saving weight is the brakes.... I'm already planning on running small cheap wilwood calipers on poverty model solid brakes, but the discs are still 5kg each and calipers are 1kg. Has anybody ever heard of motorbike brakes being used on a car? Aside from the fact their centre bit of the disc doesn't have a car-friendly fitment, you can get 4 or 6 pot radial mounted calipers which are tiny, and 6mm thick discs that are only slightly bigger than the pad contact patch. These are designed to slow a 200kg bike from 150mph+ with the tweak of a finger so when drift cars only use the brakes to make minor adjustments on a smaller diameter road wheel, does it matter that the car weighs 4 times as much as a bike? I imagine my enemies are brake fade and pads being destroyed, but my most hardcore braking manoeuvre would be to stamp on them for like 1-2 seconds at 100mph, or to ease on them round a corner to keep the speed down. Are they really going to cook for that use? I want them to work, obviously, but their feel and sharpness is worth more than their outright power IMO. What are your thoughts?