Updates from the 550 included a redesigned interior and substantial mechanical improvements, including bigger brake discs, a larger and more powerful engine, improved weight distribution, refined aerodynamics and fluid-dynamics along with an adaptive suspension set-up (the four independent suspensions are also controlled by the gearbox, to minimize pitch throughout the 200-milliseconds shift time). Two six-speed transmissions were available, a conventional manual gearbox and, for the first time on a Ferrari V12, "Magneti Marelli's" "F1" automated manual gearbox. The 575 model number refers to total engine displacement in centiliters, whilst the 'M' is an abbreviation of "modificata" ("modified").