Originally Posted by
getjet
From what i understand, the only difference (ignoring the carriers) between the stock GTI and TDI front brakes is an increased rotor size (288mm Vs. 312mm). Assuming you have no issues with your brakes at the moment, you shouldn't have any issue with horizontal clearance with GTI fronts. Vertical clearance from an increased rotor size is another matter though...
Having said that, I dont think there would be a massive difference in braking ability by simply changing rotor size alone. I guess if your brakes are rooted there's no harm in upgrading though.