Press Release
Page 1: Introduction
Page 2: Driving Dynamics
Page 3: Chassis & Design
Page 4: Summary & Specs
To ensure optimum ride and handling the XKR’s springs and dampers are uprated compared to the normally aspirated XK. The front spring rate is increased by 38% and the rear spring rate by 24%. Allied to the Servotronic steering system, which has also been tuned both mechanically and electronically to give the steering more weight and even greater response, the uprated suspension ensures confidence-inspiring handling without any loss in refinement and comfort levels.
Because of the inherent strength and stiffness of the chassis, the only significant addition to the XKR’s structure is an additional rear suspension brace mounted between the rear damper towers to accommodate the significant increase in rear spring rate. This also allows the Convertible to utilise the same dynamic settings as the Coupe model.
The Computer Active Technology Suspension (a two-stage adaptive damping system that ensures the optimum balance between ride and handling) and new switchable Dynamic Stability Control with Traction Control System (Trac DSC) have also been recalibrated to cope with the additional power of the supercharged engine.
As significant to the XKR as the increases in power and torque are the major improvements in strength and weight thanks to its advanced all-aluminium architecture. Unique in the industry as a complete aluminium monocoque body structure, as distinct from an aluminium spaceframe with separate aluminium exterior panels, its properties come from both the way the bodyshell is designed and constructed and the use of new joining technologies.
In fact, the new XKR’s aluminium chassis is significantly lighter and stiffer in both Coupe and Convertible form than the steel model it replaces. 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. The XKR now takes this athletic look one stage further thanks to the addition of:
• New XKR front bumper with colour-keyed finish to unique front fog lamp housings
• Aluminium side power vent finish
• Bonnet louvres and unique ‘XKR’ aluminium finish to upper and lower front mesh grilles
• Aluminium finish to rear signature ‘blade’ and selected exterior brightwork finishers
• Unique ‘Jupiter’ design 19-inch alloy wheels as standard, with 20-inch ‘Cremona’ XKR wheel available as an option
• Black brake callipers with ‘R’ logo
• Quad exhaust system and unique lower bumper
• ‘R’ rear badge
Design Director Ian Callum explains the thinking behind the look of the new XKR:
"We talk at Jaguar of how our new generation of models are ‘beautiful, fast cars’. It’s a phrase that ideally sums up our brand and can be applied to every car we design. We were extremely proud of the reaction to the new XK when it was unveiled last year – it is as beautiful as you would expect a Jaguar sports car to be. Now the new XKR has a look that emphasises the ‘fast’ aspect of our design statement.
"The ‘powerline’ that runs from the front wheel through the cabin area and into the car’s rear haunches remains and we have added to that latent feeling of power by adding some strong performance features such as the louvres that signify the potent supercharger and the stunning new alloys that fill the wheel arches and give the car real purpose."
The new XK’s interior design has been just as highly praised and the XKR’s cabin represents arguably the most sophisticated yet driver-focussed environment of any car in its class. The XKR has class-leading ergonomics, user-friendly in-car technology and simple, clear information displays in the instrument panel and main dashboard area.
A unique sports seat design with additional lateral support for both the driver and front seat passenger has been added, with an ‘R’ badge on the headrests, tachometer, steering wheel and gear selector. The design of the standard aluminium interior veneer is also unique to the XKR, featuring a ‘weave’ pattern from the Advanced Lightweight Coupe showcar.
XKR customers can also specify the Luxury Sports interior option which features softgrain leather on the 16-way adjustable seats, instrument panel, door trim and centre console.
