What makes the Audi R8 GT different from all other models in the R8 line-up?

Clearly, there are plenty of options to choose from, but a big part of the entire equation boils down to the tremendous weight savings given to the car compared to all other R8 models. Among other things, the rear bumper and diffuser is 17.6 lbs lighter; the battery is lighter by 20.7 lbs; even the carpeting used on the car is made from lightweight material, saving another 17.4 lbs along the way.

The front splitter and rear spoiler are also lightweight, creating the needed downforce to separate itself from the pack.

All in all, the R8->ke1440 GT is 180 lbs lighter than its counterparts, making for a car that embodies the whole definition of a "high-performance sports car".

In the fourth and final episode of Audi's->ke14 R8 GT week, 5-Time Le Mans Champion and AudiWerks Driver, Emanuele Pirro, explains in detail exactly what makes the R8 GT the car that it is. Make no mistake, all the weight savings generated by the car allows its 560-horsepower, V10 engine to reach a staggering top speed of 198.4 mph.

To recap all four episodes of the week-long series, we've added the first three episodes of the series after the jump.

Part 1

Part 2

Part 3