their are three things that I can tink of that improve braking efficency
braking efficfency is what you are going for. Suspension aside.
surface area (needed to apply pressure)
appliable pressure (this includes caliper rigidity)
heat (thermal load) (or how well the system get's rid of it)
in my opinion pads and rotors can make a great difference that people don't often think of (change to a better pad?)
the reason the metro's are vented, is because they need to be more surface area, more pressure, more heat. venting, cross drilling and slotted disks overcome this. a road/race application you shouldn't need more than straight vented rotors.
solid disks don't cut it for late, fast and consistent braking. they get hot and friction co-efficent gone.
their's a reason why people bothered to make the metro's work on mini's. because their better than 8.4 twin pistons, wich in my opinion are better than 7.2's (sorry guy's who want to keep 10' rims, but their better than drums!!
)
yes I have heard people say that they put your suspension out. but if you really want the best from your mini. you should have an fully adjustable suspension setup. Then you can compensate for a small change like 250grams in unsprung weight? and that 250grams increases the set-up's initial heat load?
just keep in mind if you want to brake in half the time the pressure in't doubled, IT'S SQUARED, and that goes for everything on your braking system. this is why a really good set of brakes will seem to cost the earth
some of the stuff that KAD make is amazing. 6 piston calipers in fully machimed alloy. But alas A have not been able to sell my soul on the ausmini classifieds for a set. Apparently I am not worth enough.
