| Lexus packs power and performance in new IS F model |
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| Written by Staff Reporter | |
| Wednesday, 30 April 2008 | |
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Lexus has introduced a new high performance car based on the IS model. The new car, called the IS F model is claimed to deliver exceptional performance and handling. Lexus claims that the car was engineered to inspire and reward whether driven on the open road or on the track. From a short driving experience it certainly does that. And, because it's a Lexus, it is engineered, built and finished to the highest standards. ![]() The new Lexus IS F is a serious performance car based on the IS model. It delivers more power and a vehicle dynamics system that gives it a lead on other performance cars. With not optional extras apart from a sunroof, prices start at over €100,000. Although the starting point for the IS F was the IS sports saloon, it is a different machine in all key aspects. The IS F is equipped with a new engine and brakes and with significant revisions to the suspension, steering, handling systems and aerodynamics to ensure the extra power and performance can be exploited to their full capabilities. At the heart of the IS F is a new all-aluminium 5.0-litre V8 engine, engineered for high output and high-performance driving. The headline figures are 417bhp (423 DIN hp) at 6,600rpm and 505Nm of torque at 5,200rpm, giving 0 to 100km/hr acceleration in 4.8 seconds. But these are just part of the story. The engine is the most powerful yet in a Lexus, benefits from a series of advanced technical features. These are claimed to guarantee durability and consistent performance under the toughest driving conditions. These include high-flow intake ports and a high-lift valvetrain, a compact intake fuel surge tank and an oil scavenge pump that keeps oil supply stable, even through high speed bends. Lexus's D-4S direct and port injection and electrically-driven VVT-iE on intake promote both superb performance and efficiency. The engine is matched to an eight-speed Sport Direct Shift (SPDS) automatic transmission, a development of the world-first unit that made its debut in the Lexus LS 460. A defining feature of its operation is that it utilises a torque converter in first gear (in M mode only), and lock-up technology from second gear upwards, giving smooth and rapid shifts. The driver can choose between ultra-quick manual shifts in M mode, using paddle shifts on the steering wheel. On downshifts, the transmission uses a blipping control to match the engine speed at high rpm, accomplishing the shifts in just three tenths of a second. It's so smooth that you would hardly notice it. The direct shift mechanism means upshifts are among the quickest in any road car system, effected in 0.1 seconds. To suit the IS F's performance profile, Lexus has adapted its Vehicle Dynamics Integrated Management (VDIM) system, with management of the ABS, traction control, Electronically Controlled Brake Limited Slip Differential and Vehicle Stability Control adjusted to improve behaviour both on road and on track. VDIM also controls the three gearshift modes – Sport, Normal and Snow – and adapts the electric power steering accordingly. In Sport mode, VDIM only intervenes when maximum drift is reached, enabling the accomplished driver to enjoy the car's full potential. The IS F uses the same double wishbone front and multilink rear suspension configuration as the standard IS, but with the benefit of a number of track-proven modifications, with high strength steel used for key elements to reduce weight and increase rigidity. Sitting an inch closer to the ground, the IS F also has a lower centre of gravity. Lexus worked with Brembo to develop the IS F braking system, with 360mm ventilated and drilled six-piston discs at the front and 345mm two-piston discs at the rear. The attention to detail extended to the 19-inch BBS forged alloy wheels and the creation of bespoke tyres with both Michelin and Bridgestone to suit the car's high performance capabilities. On the road the IS F can be distinguished from other IS models by its lower stance. The car has a deeper front spoiler with larger grille and intakes and the wider wheel arches with side vents. At the rear the stacked quad tailpipes in deep rear bumper signal the presence of the V8 engine and a spoiler is neatly integrated into the lip of the boot. The Lexus IS F will be a special interest car for two reasons. Firstly, on a performance basis the car will achieve its best with skillful drivers. Secondly, the price at over €100,000 will limit its buyer base significantly. |
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