A few days ago, I made a post about about Motor Trend's test of the Audi S8. It does a 0-60 mph sprint in 3.5 seconds and goes through the 1/4 mile in 11.8 @ 118.3 mph.. very impressive numbers. Even more so when you look at a couple other cars: 2012 Porsche Panamera Turbo S 0-60 mph: 3.5 s 1/4 mile: 11.8 s @ 118.0 mph Power: 550 hp Torque: 553 lb-ft Weight: 4,388 lb 2012 Audi R8 GT 0-60 mph: 3.5 s 1/4 mile: 11.5 s @ 125.1 mph Power: 560 hp Torque: 398 lb-ft Weight: 3,484 lb Now let's compare those to the Audi S8 0-60 mph: 3.5 s 1/4 mile: 11.8 @ 118.3 mph Power 520 hp Torque: 481 lb-ft Weight: 4,619 lb The Panamera and R8 have weight to power ratios of 7.98 lb/hp and 6.22 lb/hp. The S8? Well, that one has a weight to power ratio of 8.88 lb/hp... The identical 0-60 time of the R8 GT and S8 can somewhat be explained by their engines' way of induction. Since the R8 is NA, the torque curve probably isn't as meaty so even though it weighs a lot less an
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