I came across this post of a guy who has made custom 2 piece aluminum rotors for the Elise. I emailed him to see if he'd be down to make some in a 5 lug for the Roadster. He custom makes the hats so its possible. And they're aluminum so lighter but also they won't rust.
Group Buy: Two-Piece Slotted Rotors - LotusTalk - The Lotus Cars Community
NEW THREAD = Group Buy: Two-Piece Slotted Rotors - LotusTalk - The Lotus Cars Community
Here's a used set to show you how they wear:
Group Buy: Two-Piece Slotted Rotors - LotusTalk - The Lotus Cars Community
NEW THREAD = Group Buy: Two-Piece Slotted Rotors - LotusTalk - The Lotus Cars Community
Here's a used set to show you how they wear: