You can run 330mm rotors of 130i size if you swap the caliper carrier
Than you can use e89 z4 front rotor in 330mm size. Its two piece like 135i fronts
Oh an Performance Friction makes a very expensive 2 piece rotor and pads for the 330i which uses 130's rotors and caliper cariers, but not the caliper
Also, it be interesting to know posibilities if e36m3 rotors fit with 330i caliper carriers
http://www.ecstuning.com/News/BMW_E3...tors/ES514030/
Someone should compare rotor with diagrams to 330i/130i/z4 rotors