"It pounces on corners, tracks flat through the apexes, and devours the straights with a burly snarl from the V-8. It laps up freeway kilometers at triple-digit speeds, the suspension digesting ripples and dips so thoroughly that the body remains almost inert. All the driver has to do is aim the 645 and it goes there. Fast." Sounds great, right? Absolutely, except for the fact that it isn't about this 640i. Keen BMW fans would probably be fast to note that this 640i doesn't even come with a V8. The above is fro m a review of a 645Ci that was published back in January 2004, 12 years ago. This new review , though, was.. let's be kind and say less flattering. As seems to be a pattern now for all BMW's, except the 2-series and M models, there's lots of disappointment. "Our car, equipped with BMW’s M Sport package, offered what seemed to be a slathering of faux sportiness." It only managed 0.86 g on Car and Driver's 300-ft
A few weeks ago, I made a post explaining mainstream AWD system types and how they compare , pros and cons, etc. including some simple diagrams to show where the power goes and how much. As promised, this post will focus on specific cars and what AWD systems they use, especially ones that that have more or less been defined by their AWD systems, and the best place to start may be with a bombshell; the Nissan GT-R. Nissan GT-R (R35) The GT-R has built a reputation around having monster traction and very approachable performance, thanks to its AWD system - Advanced Total Traction Engineering System for All-Terrain (ATTESA) - and what it can do for you. But the GT-R doesn't actually use the most mechanically sophisticated type of AWD systems discussed in the previous article, namely a "true" AWD with a centre differential. Instead, it uses a clutch pack to transfer power. RWD-based clutch-type AWD schematic - Rams Eye The Track Guy © The R32, R33, and R34 Sky