Originally Posted by James************
If you want to stick with the smaller wheels (18"), then I would stick with stock discs and better performance brake pads. Honestly, going 19" lightweights wheels aren't a bad thing, especially with true-functioning BBKs (like Brembo). I know that the big brake kits are huge and they don't fit your typical 18" or 17" wheel, but your cars have massive amounts of power. Going 1" bigger on your stock 18" isn't going to hurt, and it'll give you a much better braking performance.
This thread is about owners wanting a wide range of pads that are easy to change (that rules out stock brakes) and a wide selection of R-comp tires to use at the track (that rules out 19" wheels).
I don't believe that the extra rotor size actually improves braking.