Russia’s Top Car isn’t the only tuner tampering around with the recently revealed, but not yet available, 2011 BMW 5-Series sedan. So is Racing Dynamics, otherwise known as RDSport in the USA. The Italian tuner that specializes on BMW products, has released a teaser photo (chop) and preliminary specs on the 535i R35 and the 550i R50S that will both receive a bevy of performance and styling