The brake system is matched to the power of the engine

aluminium wheels of S design. The brake system is matched to the power of the engine.The ventilated discs are 345 mm in diameter at the front and 300 mm at the rear, the black callipers at the front bear S4 emblems. A dual-rate servo assists the driver during hard braking manoeuvres by increasing the servo rate.The set-up of the dynamic suspension system, with four-link http://www.obdchina.com/Wholesale-Discount-diagnostic-products-car-diagnostic-tools_c2.html front and selftracking trapezoidal-link rear suspension, has been completely modified and numerous new components added. Audi’s chassis engineers have made extensive changes in the area of elastokinematics, and to the spring and shock absorber settings.The steering has been completely modified to give the driver greater precision, but also better feedback from the road when cruising. In connection with this, the engineers adopted several mountings and the dimensions of the front and rear shock absorbers from the Audi A6; the rear trapezoidal links and the front track rods originate from the S4 sedan. These modifications add up to a significantly higher level of agility and precise handling, combined with first-class ride comfort – all qualities which benefit drivers of the Audi A4 Cabriolet. This also applies to the brakes, the dimension and consequently performance of which have been adapted to suit the potential of the new engines.Essentially, everything that car ecu programming makes the new A4 Cabriolet stop, turn, and go, has been revised to improve the sporting dynamics of the vehicle.----The quattro driveline: driving fun and ample tractionThe new Audi S4 Cabriolet has quattro permanent four-wheel drive as a standard feature. It can therefore translate engine power into optimal progress in any conditions and exploit the dynamic potential of its aluminium chassis with a new degree of supremacy. In other words: driving pleasure in the purest sense.Even in the early planning stages, Audi& ;s body developers worked systematically on the structure of the body and simulated its reaction to movements