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A Volkswagen Touareg V10 TDI has succeeded in towing a Boeing 747-200 weighing approximately 155 tonnes. Watched by engineers, Volkswagen personnel and bemused passers-by, the Touareg V10 TDI completed seven complete runs on the auxiliary runway at Dunsfold Aerodrome, 40 miles south west of London. The car’s engine, self-levelling air suspension, wheels, tyres and structure were all standard. One precaution that turned out to be unnecessary was the fitment of the 4.56 axle ratio from the Touareg V8 model in place of the 3.27 gearing of the V10. This was established as the demonstration was conducted in the second of the Touareg’s 12 forward gears rather than first. The final modification was to change the outer body panels for photographic purposes so that this example was visually the same as the next generation Touareg which is due to be launched next year. The attempt was designed to demonstrate the reserves of strength and durability of the Touareg V10 TDI. The result was an ex-British Airways Boeing 747-200 weighing 155 tonnes.

The aircraft, first flown in 1980 and retired last year retains its full complement of 500 seats, 11 toilets and complete landing gear, albeit without an operating braking system. The original engines were removed last year to make way for dummy items used in the filming of a recent motion picture. Despite this, the aircraft still weighs 155 tonnes, due in part to the 28 tonnes of water held on board in the fuel and nose tanks. The changes to the Touareg are more modest. Modifications extend to the addition of 4,345 kg of ballast in the form of steel plates set behind the front bumper and beneath the engine. The balance of the ballast was made up by bags of steel balls weighing 25 kg each. The result is a split of 2,755 kg over the front axle and 4,275 kg over the rear to bring the total to 7,030 kg which includes Uwe Krieghoff, the nervous driver. He was not prepared to say how much his body contributed to the 7,030 kg total.

Conditions for the attempt were far from perfect. A strong headwind combined with torrential rain and resulting standing water prompted concerns over traction on the wet surface. Despite the scale of the attempt the vehicle needed little preparation. The engine was warmed up before a brief visual inspection of the tyres prior to the attempt being given the green light. The Touareg’s standard towbar (fitted with an adapted towing bracket) was hooked up to the nose wheel collar of a Boeing 747 and the chocks were removed. At the wheel Uwe selected ‘drive’ and the low ratio, second gear setting on the Touareg’s six-speed gearbox. The required tractive effort is at its highest during the initial pull to overcome the static friction of the aircraft tyres on the runway. Flatspots form on the aircraft’s 18 tyres under the 155 tonnes of weight and additional resistance must be overcome to get the aircraft rolling. Uwe pressed the accelerator around halfway down in second gear before easing off as the aircraft gained momentum. With no visible loss of traction the Touareg began dragging the 231 ft airframe of the 747 along the runway, maintaining an even five mph in the process. Having covered an estimated 150 metres the driver eased back on the throttle before slowly engaging the Touareg’s brakes to slow both the vehicle and the aircraft to a stop. After the attempt Uwe commented: ‘I was a bit disappointed we couldn’t find something heavier to tow as it was a bit too easy! The vehicle was checked after the repeated runs and no side effects of the demands made on the engine and transmission could be found. The engine temperature remained normal, as did the transmission and the tyres survived without a hint of the forces passed through them.

The Coupe chassis is over 30 percent stiffer than the previous XK, while the Convertible is over 40 percent stiffer. As a consequence the XKR accelerates faster than the previous model, while offering high levels of safety, reduced noise and vibration intrusion, and improved ride and handling characteristics thanks to improved suspension dynamics. The new XKR Coupe is also stiffer and lighter than the Mercedes-Benz SL55 AMG, with a kerb weight of just 1665kg - some 290kg less than the Mercedes. In Convertible form the BIW weight, at just 287kg is 19 percent lighter than the previous XKR Convertible. New, larger ventilated brake discs at the front ensure higher braking performance for the XKR. The front brake disc diameter has increased from 326mm to 355mm and the thickness from 30mm to 32mm, which not only improves the braking performance but also the system’s resistance to fade. The braking system also includes four-channel ABS, Electronic Brake Force Distribution, Hydraulic Brake Assist to increase brake pressure during an emergency stop, and Jaguar’s Electronic Park Brake function. Design: With the much-admired new XK already considered a future design classic, Jaguar’s creative team, led by Ian Callum, had a great starting point from which to produce the XKR. The XK range’s elegant form draws on the lineage of the original XK and E-type sports cars, and by blending this unmistakeable Jaguar silhouette with contemporary flair its exterior forms a stunning blend of elegance, athleticism and definition.