after verifying that the brakes will infact stop the car
get the car to some long backroads with very little traffic... touching the brakes as little as possible
my break-in process
accelerate normally to 30 mph... press the brakes and quickly slow to about 5mph
**** important note **** you are not JAMMING on the brakes here... you are simply braking hard... you should NOT be close to locking the brakes up... just apply them enough to quickly slow the car (it should be the kind of fast braking that would make you concerned if there was a coffee in the cup holder... kinda like when you realize at the last second that you're supposed to turn)
when you get to 5mph accelerate back up to 30mph
drive at 30mph for at least 1/3 - 1/2 a mile to let the brakes cool (more distance is better... you DO NOT want to over heat the brakes right now)
then apply the brakes again slowing to 5mph
back to 30 again... 1/3-1/2 mile repeat this untill you have done it 5 times
after 5 times, drive without using the brakes for about a mile to let them cool
now if the breaks feel like they are grabbing nicely, up the speed to 45mph and repeat 5 more times (otherwise continue from 30 a few more times then go to 45)
after that your brakes should be just about broken in...
**** important note**** after the break-in your brakes are going to be really F'n hot... drive around for about 5 minutes without using the brakes to let them cool...
if you do need to slow down during the cool down, use the brakes as little and as lightly as possible
if you do need to stop at any point, DONT.... come to a very slow roll and continue moving untill you can get back up to speed again... you do not want the brakes to cool unevenly... that is what causes warping
full break-in can take up to a few days to happen... just drive normally... try not to jam on the brakes too hard for the first 2 or 3 days... if you must brake hard, drive for a little while to let them cool (this is always a good idea, not just while breaking them in)
thats the method i use on all of my cars
and thats the method i used on customers cars when i worked at the shop
hasnt failed me yet... customers were always pleased with the feel of their brakes after i finished the break-in