Unveiled at the 2013 Geneva Motor Show, the R8 LMS ultra is a modified version of the Audi R8 LMS with CFRP (carbon-fibre-reinforced plastic) doors with high-energy absorbing new crash foams, new PS1 safety seat developed by Audi, updated transmission providing additional reserves on long-distance runs, increased engine power to 570 horsepower (depending on restrictor regulations) with higher torque at lower engine speeds, a larger engine oil cooler and transmission fluid cooler, relocated steering hydraulics oil cooler to the vehicle's midsection, enlarged air vents, improved air flow to radiator and interior, front 18-inch wheels with Michelin 30-65/18 tyres, optimized brake cooling at the front wheels, uniball joints transverse control arm mounts, weight-reduced compression and rebound-adjustable gas dampers from Bilstein, wider front hood with louvers, new wider rear wing with larger end plates, new front plate with optimised diffusion under the front end.