D3 suspension, steering, brakes, tyres
The S8, like its related A8, utilises a multi-link suspension layout front and rear, with pressurised air springs. However, for the S8, the effective spring and damper rates are noticeably firmer, along with re-engineered suspension mounts. "servotronic" speed-dependent power assisted rack and pinion steering point the S8 in the desired trajectory.
The brake system consists of radially ventilated discs all round, the fronts sized at 385 millimetres (15.2 in) in diameter by 36 mm (1.42 in) thick, and the rears at 335 mm (13.2 in) by 22 mm (0.87 in). The discs are clamped with gloss-black painted dual-piston calipers up front, and a single-piston sliding caliper at the rear, coupled to an electro-mechanical parking brake. A Bosch ESP 5.7 (later upgraded to ESP 8.0) Electronic Stability Programme, with Anti-lock Braking System (ABS), Brake Assist, and Electronic Brakeforce Distribution (EBD) complete the brake system.
Optional "Audi ceramic" Carbon fibre-reinforced Silicon Carbide (C/SiC) composite front and rear brakes are available, which use 380 mm (14.96 in) diameter by 38 mm (1.496 in) thick drilled, radially vented, and floating SGL Carbon discs, with anthracite grey painted six-piston fixed Brembo monobloc alloy calipers with the "Audi ceramic" logo up front, and 356 mm (14.02 in) by 28 mm (1.102 in) discs at the rear.
Standard alloy wheels consist of 9Jx20" cast aluminium alloy "S design", shod with either 265/35 ZR20 99Y XL performance tyres (either Bridgestone Potenza RE050A, or Yokohama Advan Sport), or 275/35 ZR20 102Y XL (ContinentalDunlop SP SportMaxx, or Pirelli P-Zero Nero). A direct-acting tyre pressure monitoring system (TPMS) is also standard. SportContact2,
[edit] D3 body and interior
The S8 includes subtle detailing to distinguish it from its related A8. The trapezoidal "single-frame" grille bears the characteristic Audi "S model" vertical strut detail which are highlighted in a chrome finish. "S8" badging is displayed front and rear, whilst "V10" badges are displayed on each front wing below the side-repeater indicators. The rear boot-lid incorporates a subtle rear spoiler, and the rear is finished with four chromed oval exhaust tailpipes.
Adaptive Xenon-plus high-intensity discharge (HID) headlamps include static turning lights, along with 'swiveling' dynamic cornering lights. Daytime running lamps are five light-emitting diodes (LEDs) incorporated into a cloverleafheadlamp housing. designed reflector, incorporated into the main
The interior equipment includes two-colour leather-clad sports seats, a widescreen colour display for the Multi Media Interface (MMI), and white illuminated needles for the instrument dials.
An optional 1000 watt digital Bang & Olufsen "Advanced Sound System" can be specified to replace the standard BOSE surround sound system. Other notable options include the "Advanced Parking" system, which includes a rearview camera, whose output is displayed on the colour MMI monitor, with "trajectory" lines which move in conjunction with steering wheel movements.
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