The B7 RS 4 also incorporates Audi’s “Dynamic Ride Control” (DRC) “Sports Suspension” mechanism. The dampers (shock absorbers) are made for Audi by KW, and central reservoirs/valves made by KYB (Kayaba).
In the RS 4 suspension, a fluid hydraulic linkage between diagonally opposing front and rear suspension dampers (left front to right rear, and vice versa) is used to counteract vehicle pitch and roll. Lightweight magnesium/aluminium alloy multi-link suspension arms (four arm with virtual steering axis up front, and trapezoidal arm with unequal length track control arms at the rear) locate each hub/brake/roadwheel assembly in a controllable fashion, whilst minimising unsprung masses. Lightweight hollow tubular anti-roll bars are standard front and rear. Compared to standard B7 A4 models, the RS 4 features a 30 mm (1.2 in) lower ride height. An optional “Sports Suspension Plus” lowers the car by a further 10 mm (0.4 in), and marginally further stiffens the damper rates.
Axle track has also been increased over standard A4s; the front widened by 37 mm (1.5 in), to 1,559 mm (61.4 in) and the rear by 47 mm (1.9 in) to 1,569 mm (61.8 in).
Speed sensitive “servotronic” variable-assistance electro-hydraulic power assisted steering (PAS) is controlled from a compact flat-bottomed steering wheel, finished in perforated leather with mock-aluminium trim. The steering rack ratio is 13.1:1, and the turning circle is 11.1 metres (36.42 ft). subaru wallpapers, audi wallpaper, lambo wallpapers, Audi RS4 wallpapers, mazda wallpapers
(Ferrari 488)Transmission
The available transmission for the 488 is a dual-clutch 7-speed F1 gearbox manufactured for Ferrari by Getrag, based on the gearbox used in the 458.
Handling
Improved carbon-ceramic brakes are used on the 488, derived from technology used in the LaFerrari, constructed with new materials that reduce the time needed to achieve optimum operating temperature. Disc sizes are 398 mm at the front, and 360 mm at the rear. These advancements reportedly reduce stopping distances by 9% over the 458.
A new five-spoke alloy wheel was designed for the 488, measuring 51 cm (20 in) at front and rear respectively. Front tyres measure 245/35 and the rear tyres 305/30. Ferrari 488 wallpapers#Chevrolet #chevrolet #AudiRS3 #Mercedes #AudiRS3
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