There are drilled rotors for the mk3 but they're likely done after the disk is produced, not during casting like you mentioned. Really this came about as an effort of 'scuffing' the pads to reduce the layer of gas built up during use. Evidently modern pads don't gas like this anymore and the need for drilling/slotting has become obsolete. There are other advantages, less weight, more surface area for heat transfer but you're introducing an are that's more prone to cracking and have somewhat less surface area for braking power.
I agree, make small changes so you'll notice what's really working and what's not. Granted big brakes would be nice but you'll be amazed what a good pad can do. Also, with big brakes you'll get more stopping power all of the time, you don't want to use proper race pads on the street as they'll kill rotors or wear quickly.
I agree, make small changes so you'll notice what's really working and what's not. Granted big brakes would be nice but you'll be amazed what a good pad can do. Also, with big brakes you'll get more stopping power all of the time, you don't want to use proper race pads on the street as they'll kill rotors or wear quickly.