Min wheel size for brembos

[Eeyore]

Sucks as really wasnt planning on new wheels

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What can i do to get the most out of gti brakes?

brembo max discs
ferrodo ds2500s
braided lines
gti6 master cylinder

probably the best you can do. Im going to get the ds2500 pads but not the brembo discs as there are super expensive and seem hard to find.