has launched new Sedan for you, 2012 . The 2012 is an M3 GTS with four doors. This car isn’t called the M3 CRT Big Horsepower though, so let’s get to the things that make it lighter than a standard M3 sedan. Benefitting from new manufacturing processes developed for the carbon-intensive BMW i3 and i8 models coming in 2013, the M3 CRT has a hood that consists of two carbon-fiber sheets encasing an aramid composite honeycomb for added rigidity. As a result, it has the strength of a traditional steel hood with just a quarter of the weight. Compared to a normal M3’s aluminum piece, the weight is halved.
Inside the cabin, the front bucket seats use the same process and therefore benefit from the same weight savings. The result is a car that weighs just 3483 pounds despite standard equipment that includes a dual-clutch transmission, navigation, a high-end BMW Individual audio system, and parking sensors. BMW says that, while the official weight savings is 100 pounds, if all this equipment is considered, the real savings is over 150 pounds. And considered alongside the car’s added horsepower, the cuts are good for a ratio of 7.7 pounds for each pony to carry, an improvement of roughly one full pound over the regular M3 sedan.
The M3 GTS carry-overs continue behind each of the car’s 19-inch lightweight wheels (wearing 245/35 rubber up front and 265/35 at the rear), with a set of more-rigid subframes and individually-adjustable dampers. The six-piston front brakes, also from the GTS, use calipers made of a special low-weight compound construction and, in the name of consistent pedal feel, stainless steel brake lines have been fitted.
Source : Caranddriver
