braking isn't about locking the wheels up, i'm sick of seeing this on here! i bet micra brakes would lock up the wheels of a maclaren slr, so why do they put ceramic brakes on??? it's all about heat dissipation, the faster you can dissipate the heat, the faster you'll stop. only idiots and people who can't drive properly lock up the wheels
the standard micra brakes are no good even in a 1.0 with spirited driving around country lanes. i know this because i've cooked mine before - not a nice experience, and not something i wanted to do again. so on my 1.3 i've got n14 1.6 brakes on now, but sat in my shed is exactly the same set up as brooney's selling.
a car with decent brakes would probably lap a track faster than a more powerful car with standard brakes, because the brakes wouldn't fade as much and they would be able to brake later into the corner.
i agree with not having a correct set up front and rear, but the micra has an ajustable load valve for the rear brakes. but i've got a rear disc axle to fit to my k11 anyway
the only down side to fitting gti-r brakes is the excess weight of them, but i've not seen any actual weights of either gti-r, n14 1.6 or micra std brakes. the discs can't be that much heavier, so that shouldn't affect rotating mass too much, so overall, it's probably like eating a large meal just before you get in the car. lol