Big Cat special

A foggy, damp and forbidding Rockingham Motor Speedway in Northants was the venue for one of our most exciting group tests of the year. On the grid were the hottest R versions of the Jaguar XF and XK. They were flanked by their closest rivals, the storming BMW M5 and Maserati GranTurismo S. As the Italian firm couldn’t supply a car, the example in our pictures was kindly provided by an enthusiastic (and trusting!) reader. Figuring the 433bhp coupé on the greasy tarmac of the infield is something road test editor Ross Pinnock will never forget...