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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.

2015 Porsche 911 GTS starts at $114,200*

Purists often criticize Porsche for creating products like the Cayenne, Panamera and recently launched Macan, saying they dilute the true sports car spirit of the brand. It's an argument we've heard before, and one we counter with two points. First: No they don't. And second: These are Porsche's volume superstars, and the money they rake in allows the company to create dozens of versions of its well-liked sports cars. Want proof? Have a look at the gallery above, where you'll see four new versions of the 911, all with GTS badges on their rumps. This means Porsche now offers 19 versions of the 911. Nineteen.
Porsche offered a GTS version of the 911 in its previous generation, and this new one seeks to slot somewhere between the standard car and the hardcore GT3. It's available in coupe and cabriolet forms, with either rear- or all-wheel drive, starting at $114,200, *not including $995 for destination. The GTS Cabriolet comes in at $126,100, while models equipped with AWD will set you back $120,900 or $132,800 for the coupe or convertible, respectively.
All GTS models get the 430-horsepower version of the Carrera S' 3.8-liter flat-six with the Powerkit, which also includes the Sport Chrono package and the sport exhaust. If equipped with the PDK dual-clutch transmission, the 911 GTS will hit 60 miles per hour in just 3.8 seconds (or four seconds flat, if you've got the Cabriolet) - one tenth of a second quicker than the normal Carrera S. The car's top speed varies, depending on trim or transmission, but Porsche says the car will hit anywhere from 187 to 190 mph, flat out.

Watch a Cayenne Turbo S, Range Rover SVR, and Cherokee SRT drag race

We live in a weird world where high-performance SUVs could win a 60-mile-per-hour sprint against sports cars from just a few years ago. Here, Top Gear sets up a three-way drag race against the Porsche Cayenne Turbo S, Land Rover Range Rover Sport SVR, and Jeep Grand Cherokee SRT, and the results show just how quickly these high-riding models can cross the quarter mile. The Cherokee SRT is the patriotic choice among the three, but it's down on power in this fight. Meanwhile, the Range Rover's menacing growl sounds the best, and the Cayenne Turbo S has the most horsepower. You'll have to watch the video to see which SUV will win this battle. Related Video: