Your gonna still wanna do some sort of cooling....anything is better than nothing.
Pixel's cut and bend mod works just great, you can also try doing my f30 backing plate conversion..
Note : i have slotted / crossdrilled BMW performance rotors for 1.5 seasons of tracking.. no cracks >>> (Mind you i have a 128 with lower top speed and lower gross weight )
FIRST PIC IS STOCK BACKING PLATE
SECOND PIC IS STOCK PLATE WITH WHEEL INSTALLED
THIRD PIC IS F30 PLATE
FOURTH PIC IS F30 PLATE WITH WHEEL INSTALLED
(Mind you wheel offsets my diminish "scoop" that sticks into air ... ymmv