I just got off the phone with EBC brakes. They make a really nice slotted rotor which I run on my truck, would be nice to upgrade the Roadster's rotors to slots. I found some listings online for a 5 lug Lotus Elise rotor by EBC. But EBC couldn't find any listing for them, only for the 4 lug. I called back and told them that the rotors are the same but the only difference was that the Elise runs a 4 lug where the Tesla Roadster runs a 5 lug bolt pattern. I told them it shouldn't be too hard to just add another lug hole and place them accordingly. But he came back saying they don't make custom rotors since there's a program and a cast used to make the particular rotor for each car. He did say if I have measurements of the rotor he can look up in his database if there's a rotor that would fit that they already produce. So if someone has the measurements or can get them please post. I'll try to update this post when I pull my wheel off. We'll need the following measurements for both the *Front* and *Rear* rotor: A) Outside Diameter B) Circular Bolt Pattern or PCD More on info on figuring out the PCD at the bottom of this post. C) Center Hub Hole Inner Diameter D) Total Overall Height - This is where you lay the rotor flat on its side and measure from the flat plane (on the table) up to the highest point of the center hub sticking up. E) Thickness of the Rotor Blade If they can't find a match and we can't persuade them to make a 5 hole rotor we could pick up the Lotus Elise 4 lug rotor and drill out the rotor for 5 lugs that fit the Roadster. References: [PCD] What does wheel PCD mean? - Wheel-Fitment.com - PCD, Offset, Center Bore, mounting and tire size data http://www.crankshaftcoalition.com/wiki/Wheel_bolt_pattern Brake discs - TechWiki EBC Ultimax Black Anodised discs "EBC Ultimax discs offer much quieter braking and feature a special paint process to prevent corrosion. Note that the black surface will go away on the part where the brake pads touch the disc and this area can/will rust. How fast is depending on how the discs are used (and brake pads). I have read reports from 2 month to still being totally black after 2 years."