The candidates for the competition for the fastest sprint from zero to 300 km /h and come to a standstill again: the 806 hp Koenigsegg CCX-R, the G umpert Apollo with 700 hp and the Lamborghini Murcielago LP 670-4 SV (670 hp), Aston Martin V12 Vantage (517 hp) and the Cadillac CTS-V with 564 hp and the 507 hp Wiesmann GT MF5 with a ten-cylinder engine. Ruf comes up with the Rt 12 s, which has 685 hp and meets the Porsche 911 GT3 (435 hp) and the new Porsche 911 Turbo with 500 hp.
Protocol one Fast-paced day
Countless pairs of eyes stare mesmerized at the screen of the iPhone. Dark clouds move over the weather radar of an internet service called up there. 'And when will the rain finally stop?' Is the most frequently asked question this Saturday morning. 1 p.m., 3 p.m. - not at all? The expressions of the test crew darken with every forecast with the rain clouds moving in the sky. Only at 6:15 p.m. the first rays of sun finally blink through the dark cloud cover - the starting signal for the great acceleration and braking duel 0-300-0 can be given.
In addition to dry weather conditions, a suitable test track is a prerequisite for the extreme test. Nine series vehicles and five tuned high-speed test subjects roll on the 12.3-kilometer oval circuit in Papenburg. While 0-100 values and top speed count in the Autoquartett, the sprint from zero to 300 km /h is much more demanding. While a lot depends on the driver's sensitivity in handling the clutch and accelerator pedal when accelerating perfectly to country road speed, the engine output plays an increasingly important role up to 200 km /h and beyond.
A good braking system counts just as much as the engine power
When bragging about the regulars' table, negative acceleration is rather uninteresting. But a good braking system is not just as important for racing professionals as the engine power. If you want to arrive safely with a sports car, you should also think about the delay of your car. To ensure the same conditions for all participants, the vehicles roll to the petrol pump before the start. 'Fill up' and 'weigh in' are on the programfirst of all. Then the suction cup of the bright red 2D measuring system pops on each windshield.
The test procedure follows a strict procedure
Each vehicle is accelerated and braked at an identical point for better comparability. In order to avoid measurement errors, the acceleration is measured separately from the emergency braking, and both values are later added to a total time. It is generally driven by two people. Before the start, the pit crew's air pressure gauges also hiss. 'When choosing the right tire pressure, there is a trade-off between low and high air pressure. It is not easy to find the right mixture for this test,' explains Markus Happel, tire engineer at Dunlop.
For perfect acceleration, a higher air pressure is ideal in order to achieve a low rolling resistance of the tire. When braking, a larger contact area of the tires brings advantages, which is achieved through a lower air pressure. 'Of course, the air pressure also depends on the weight of the vehicle. An Audi RS6 drives with a higher air pressure than, for example, a Ford GT,' says Reifen-Mann Happel. The pit team jumps back, the lollipop shoots up - the first candidate shoots from the pit lane onto the oval ....
... read more about the individual vehicles (click in the table).