The XJR-15 was based on the same central monocoque “tub” as the Tony Southgate-designed XJR-9, and the body, designed by Peter Stevens, was constructed of lightweight and advanced composite materials. The XJR-9 suspension was retained at all four wheels, with fabricated wishbones and horizontal pushrod-spring dampers at the front and coil springs at the rear. Four-piston AP Racing calipers mated to disc brakes housed completely within the wheels provided stopping power.
The Group C-specification engine, a 450 bhp, six-liter alloy, dry-sump V-12, included a Cosworth forged crankshaft, connecting rods and aluminum pistons, with fuel delivery via Zytec electronically controlled sequential fuel injection. The transmission was a TWR six-speed transaxle with straight-cut gears, matched to an AP triple-plate carbon clutch. Walkinshaw’s work resulted in a car weighing just 2,315 pounds and endowed with awesome handling, excellent power-to-weight, race-proven reliability and a 215-mph top speed. All this came at a price of nearly one million US dollars.
The XJR-15 is considered Jaguar’s ultimate supercar, and its athletic lines rank with those of the fabled C-Type, D-Type and XJ13 in aesthetic appeal. However, its shattering performances eclipses that of its distinguished forebears.
This car was auctioned off by RM Auctions in August of 2011 at the Portola Hotel & Spa and Monterey Conference Center, Monterey, California.
450 bhp, 5,993 cc all-alloy, mid-rear mounted Group C-specification V-12 engine, Zytec electronically controlled sequential fuel injection, TWR six-speed manual gearbox transaxle, double-wishbone four-wheel independent racing suspension, and four-wheel hydraulic disc brakes. Wheelbase: 107"
Source: RM Auctions