Carbon fibre-reinforced Silicon Carbide (C/SiC) ceramic composite brake package. Ferrari claimed the carbon ceramic brakes will not fade even after 300-360 laps at their test track. Features The F430 featured the E-Diff, a computer-controlled limited slip active differential which can vary the distribution of torque based on inputs such as steering angle and lateral acceleration. Other notable features include the first application of Ferrari's manettino steering wheel-mounted control knob. Drivers can select from five different settings which modify the vehicle's ESC system, "Skyhook" electronic suspension, transmission behavior, throttle response, and E-Diff. The feature is similar to Land Rover's "Terrain Response" system. The F1 automated manual transmission was built by Graziano Trasmissioni. The Ferrari F430 was available with exclusive Goodyear Eagle F1 GSD3 EMT tires, which have a V-shaped tread design, run-flat capability, and OneTRED technology. In the US, the company requested an exemption from the airbag design requirements, which was eventually granted, allowing the car to continue to be sold in the US. Variants F430 Spider The F430 Spider is the convertible version of the F430. It was unveiled at the 2005 Geneva Motor Show, making it Ferrari's 21st road-going convertible. The car was designed by Pininfarina with aerodynamic simulation programs used for Formula 1 cars. The conversion from a closed top to an open-air convertible is a two-stage folding-action; the roof panel automatically folds away inside a space above the engine bay. The interior and performance of the Spider are identical to that of the coupé with an increase in the weight and decrease in the top speed by . 430 Scuderia Serving as the successor to the 360 Challenge Stradale, the 430 Scuderia (scuderia meaning "stable", but also used in the context of motor racing teams, including Ferrari's own) was unveiled by Michael Schumacher at the 2007 Frankfurt Auto Show. Aimed to compete with cars like the Porsche 911 GT2 and the Lamborghini Gallardo Superleggera (superleggera meaning super light weight), it is lighter (by ) and more powerful ( at 8,500 rpm and of torque at 5,250 rpm) than the standard F430. Increased power comes from a revised intake, exhaust, and an ion-sensing knock-detection system that allows for a higher compression ratio in the engine. Thus the weight-to-power ratio is reduced from 2.96 kg/hp to 2.5 kg/hp. In addition to the weight saving measures, the Scuderia's single-clutch automated manual gained improved "Superfast" software, known as "Superfast2", for faster