Porsche 911 Coupe on 2040-cars

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Jay Leno puts carbon fiber wheels to the test on a Porsche 911 GT3 RS

Jay Leno's Garage usually focuses on looking at cars new and old, speaking to their owners and then Jay taking a drive to see what he thinks. However, Leno throws his usual shtick to the curb this week to do a full product test of the carbon fiber wheels from a company called Carbon Revolution. If you're not interested in hearing about wheels for 18 minutes, don't worry. They get mounted on a Porsche and are tested back-to-back with stock wheels, and Leno takes the 911 for a track test, too.
While carbon-fiber wheels aren't exactly a new idea, Carbon Revolution's goal is to create a lightweight, one-piece product that can be mass produced. The company even claims that it already has a deal with an OEM automaker to offer them on a vehicle in a few years. The key to the technology is that it doesn't need an expensive autoclave to be made.
In the meantime, the company's carbon fiber wheels are available as an aftermarket option for about $15,000 a set, according to the video. They weigh in at about 15.5 pounds each and offer OEM-levels of stiffness, so they could cut some unsprung mass off of a performance car. Watch here as Jay and his mechanic Bernard lap Willow Springs and give their feedback about what they think of this cutting-edge technology.

Motor Trend holds World's Greatest Drag Race for the third time

As part of Motor Trend's Best Driver's Car competition, the buff book has held its third iteration of the World's Greatest Drag Race. With an airfield and a dozen of the world's finest performance cars at its disposal (oh, and a helicopter), the MT team did what any good group of enthusiasts would do, and tried to figure what car could cover a quarter mile the quickest. World's greatest drag race, indeed.
The contestants, as MT points out, cover a huge variety of engine types, drivelines, aspiration types and body styles, making for a genuinely varied and interesting field of competitors. Here's the full list of cars taking part.
Aston Martin Vanquish

Porsche reveals new 911 GT3 R at the Nurburgring

On any given weekend, you're bound to find gaggles of Porsche 911s zipping around most any race track. Now Porsche has revealed its latest competition model at no less fitting a location than the Nurburgring. The new 911 GT3 R replaces the existing version, slotting in below the 911 RSR. It's based closely on the road-going 911 GT3 RS, and retains the same 4.0-liter naturally aspirated flat-six with direct injection and variable valve timing, but tuned to deliver over 500 horsepower, transmitted to the rear wheels through a six-speed sequential paddle-shift gearbox and mechanical limited slip differential. The wheelbase has been stretched over three inches for better weight balance compared to the outgoing GT3 R, further optimized by more lightweight components and a central radiator to lower the center of gravity. The lightweight bodywork is made of aluminum, steel, and carbon fiber, and for the first time all of the glass (including the windscreen) has been replaced by plexi. Stopping power is provided by six-piston aluminum monoblock calipers gripping 380-millimeter steel discs up front, with four-piston calipers and 372-mm discs at the back. The safety fuel cell can now hold 120 liters of fuel with a cut-off safety valve, the doors and windows can be removed, and the escape hatch is bigger, too. All of this adds up to the promise of a more competitive GT3 R ready to take on the competition, available to privateer racing teams from December for 429,000 euros before tax – working out to about $487k at current exchange rates. World premiere at the Nurburgring Lighter, more economical, faster: the new 911 GT3 R Stuttgart. Based on the 911 GT3 RS production sports car, Porsche has designed a customer sport race car for GT3 series around the world: The 911 GT3 R. In developing the more than 368 kW (500 hp) racing nine-eleven, special attention was paid to lightweight design, better aerodynamic efficiency, reducing consumption, improved handling, further optimised safety as well as lowering service and spare parts costs. Adopted from its production sibling, the 911 GT3 R features the distinctive double-bubble roof, and the wheelbase which had been lengthened by 8.3 centimetres compared to the previous generation. This ensures a more balanced weight distribution and more predictable handling particularly in fast corners corners in comparison to the previous GT3 R.