That might not matter. These are brembo brakes. They don't use the stock rotor. They use their own with a custom hat. All you need is the hat for the 335 which might be the same as the M3. If you cat get the hat separately then you need a pair of rotors. It's cheaper for Brembo to make different brackets and hats. The OP already has the calipers which are the most expensive part. Selling a used set and tryin to buy a new set would be very expensive.
'06 Arctic Metallic 325i | Sport Package | 6MT | Dinan Stage III suspension | Dinan exhaust | 330i manifold swap! Click here!
| Active Autowerke tune | 135i Brake Calipers | Deiselboost caliper brackets | E46 M3 front rotors