Auto Car | Ferrari 599 GTO | Ferrari's new extreme V12 berlinetta, the 599 GTO, delivers a lap time of just 1 minute and 24 seconds at Fiorano, making it the fastest road-going model in our history. This limited edition special series of just 599 is the new pinnacle of Prancing Horse sportiness and has benefited to an enormous degree from technological transfers from the track. Many of the cutting-edge solutions sported by the 599 GTO are also the product of the Maranello engineers' experience in the development of the 599XX, the prototype experimental car of which, as its legendary moniker suggests, the 599 GTO is the road-homologated version.
VEHICLE DYNAMICS
One of the most significant innovations on the 599 GTO is the close correlation between the chassis set-up, which is close to the handling limit, and the input from the electronic controls which are developed to increase overall levels of performance.
Since the very earliest states of the two cars’ development, Maranello’s engineers worked to ensure that these two areas of the car would be seamlessly integrated thus pushing responsiveness to the limit. The result is, of course, superlative driving involvement as well as faster lap times. Apart from new springs and a stiffer rear anti-roll bar, the car also features a second generation magnetorheological suspension control system (SCM2). The suspension works in tandem with the VDC (Vehicle Dynamic Control) and latest-generation F1-Trac traction control. This makes the car extremely responsive to driver inputs – thanks in part to the adoption of a very direct steering ratio – but also very stable under braking, sharper on turn-in, more precise in cornering and quicker out of corners.
WEIGHT REDUCTION
The 599 GTO inherits much of the development work – using the same principles as employed in F1 – that went into making the 599XX such an extreme performance car. Reducing weight was a vital objective and the result was the widespread use of composites and components manufactured with technologies more akin to racing specifications. The areas involved include the bodywork and greenhouse (with thinner gauge aluminium and thinner glass), the brakes, transmission and exhaust system. The result is a dry weight of 1495 kg and a weight-to-power ratio of just 2.23 kg/hp, a very significant figure that underlines the GTO’s performance potential.
AERODYNAMICS
The 599 GTO’s aerodynamics have benefited significantly from Ferrari engineers’ experience in F1 and with the 599XX which allowed downforce to be greatly increased without impacting on drag. Thanks to solutions transferred from the track car to the road-going version, the GTO generates downforce of 144 kg at 200 km/h. The entire car was honed, including the front, the sides, the flat underbody and cooling flows. In the latter instance, the GTO can count on improved ducting to the brake discs and pads, and the adoption of wheel doughnuts – a disc positioned outside the brake disc that ensure that hot air exiting the wheelarch stays as close to the body of the car as possible to reduce drag.
Work on the nose of the car was aimed at reducing the width of the wake generated by the front and thus reduce drag. The front spoiler incorporates a separate lower wing that increases downforce at the front of the car and increases the flow of cooling air to the oil radiator. On the flanks there’s a new sill design with a more pronounced leading edge that improves the efficiency of the central section of the underbody. The underbody itself incorporates a new, lower front section with diffusers ahead of the front wheels to optimise downforce, and a new double-curve rear diffuser.
WHEEL RIMS AND TYRES
Here the difference in size between the front and rear tyres has been changed. The GTO’s front tyres are now 285/30 on a 9.5” channel with 315/35 on an 11.5” channel at the rear. The 599 GTO has 20” rims. Roll rigidity is greater at the rear to minimise understeer. These solutions guarantee improved lateral grip and quicker turn in.
BRAKES
The new CCM2 braking system is lighter and even more consistent in high performance situations. Its consistent coefficient of attrition meant that the ABS could be calibrated to a particularly high performance level, further reducing lap times, thanks to improved deceleration and shorter stopping distances. In fact, the 599 GTO boasts an excellent 100 to 0 km/h braking distance of just 32.5 metres. As well as their role in improving aerodynamics, the Formula 1-derived wheel doughnuts also improve braking efficiency by optimising brake cooling.
( egmcartech.com)
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