TopGear On Ice: Lambo Aventador
We do have a slight advantage not offered to most hypercar drivers, mind. The Aventador is on full winter tyres. I didn't even know that they made Pirelli Sotto Zeros in 335/30 20. The front wheels are a slightly smaller 255/35 19, but that's still pretty big. To put that into perspective, the rear tyres on the Lambo are each 335mm wide: the magazine you're holding is about 285mm top-to-bottom. Call for that sort of rubberwear is understandably rare: not many hypercar drivers bimble around when the going gets snowy. The next few kilometers demonstrate why. The Aventador might be AWD and on snow tyres, but the system it uses is called Haldex IV and is not the same kind of gnarly, ultra-mechanical 4x4 you get from something like the Defender. Basically, in the Lambo, it's set up to aid high performance driving, rather than tidy up ultra-slippy surfaces. As I'm forced to nerf the back end on a snow bank to bring it back into line on a downhill section, I remember that the Aventador is essentially a rear-biased sports car (80 per cent rear under hard acceleration) with a limited-slip coupling that sits in line with the driveshaft, controlling the torque split between the front and rear axles. Too much wheelspin at the rear, and it allows more torque to the front to help, but snow crawling isn't really in the remit. The system also incorporates an eLSD, or electronic limited-slip differential, so that power can be transferred across axles when one side is spinning, meaning - in theory - that 85 per cent of the power available can be thrown at a single wheel with grip. This is bugger-all use when you're off the throttle and barrelling down a snow-covered hill, with the rear making a solid attempt to overtake the front. I find myself making a high-pitched mewling noise, like someone quietly setting fire to a kitten.