IT'S not hard to pick the XKR from its lesser sibling, the XK8. Bespoke red paint, aggressive 10-spoke, 18-inch alloy wheels, wiper-blade thin boot lid spoiler, vented bonnet and honeycomb mesh grille separate this car. The performance, too, is in another league, thanks to the supercharged V8 engine lifted from the XJR sedan, and sports suspension mated to those massive wheels and tyres which provide a huge amount of grip.