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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:

Porsche offering new tire option for Carrera GT

Let's face it: finding new tires for older cars can be challenging if tire manufacturers have stopped carrying the right sizes (this writer went through Hell to find a set of 205/60-13s). But what about tires for low-volume supercars, which use sizes that often won't fit on high-volume production vehicles? The Porsche Carrera GT isn't that old and tires are still available in the correct sizes, but the German automaker has shown its support of keeping them on the road by working with Michelin to give owners yet another tire option. Enter the Carrera GT-specific Pilot Super Sport.
It's common knowledge that tires are one of the most important pieces of the performance puzzle, and Porsche claims that the PSS tires, sized 265/35ZR-19 front and 335/30ZR-20 with Porsche's "N0" rating, will improve the Carrera GT's handling and stability all the way up to its claimed top speed of 205 miles per hour. That's important for a car with razor-sharp handling characteristics. They'll also net drivers a 10-percent increase in fuel economy on regular roads and up to 20 percent on racetracks, Porsche says.
The PSSs use cutting-edge tire technology to harness the Carrera GT's 610-horsepower. They have a dual-compound tread that's different from the inside of the tire to the outside, which, Porsche says, helps steering precision and increases maximum grip. Aramid fibers, which are lightweight but just as strong as steel, are used in the tire's belt to reduce unsprung weight.

Porsche to introduce new Boxster Spyder, Macan GTS this year

Dig the new Porsche Cayman GT4 but really wish it came in open-top form? Love the Boxster GTS but wish it had more punch? Well we've got good news for you, friend, as that seems to be precisely what Porsche has in store. Among the new models the Volkswagen Group has lined up for this year will be a new Porsche Boxster Spyder. Although no details were announced along with the name, there are a few elements we can look forward to. The new Boxster Spyder is tipped to be essentially an open-top version of the Cayman GT4, but just how many of the latter's components will make the jump from coupe to convertible remain to be seen. The GT4 packs the 3.8-liter flat six from the 911 Carrera S with 385 horsepower, channeled to the rear wheels through an old-school six-speed manual transmission. It also has carbon-ceramic brakes, revised aero, and a stiffened suspension. The Spyder version of the previous Boxster arrived in 2009 with a modest 14-horsepower boost, a retuned suspension and a good 176 pounds trimmed off its curb weight thanks to the elimination of the motorized soft top, air-con and other components. That's not all Porsche has in store for 2015, though. The German automaker has also confirmed a Macan GTS is in the works that promises to explore the little crossover's performance potential. Projecting just what Porsche will do to Macan to give it the GTS treatment, though, is a little tricky. Sure, the German automaker already offers GTS of the rest of its lineup, but just where that model slots in to each line varies. On the Boxster and Cayman, it slots in between the S and GT4/Spyder. For the 911, it serves as a mid-point between the Carrera S and the GT3. And with the Panamera and Cayenne, the GTS bridges the gap between the S and Turbo models. Considering both the Macan S and Macan Turbo pack twin-turbo V6s, the Macan GTS could serve as a mid-point between the S and Turbo with around 350-360 hp, or (more likely) top the range with upwards of 420 hp. One way or another, though, we can expect upgrades to the suspension, brakes, rolling stock and trim to complete the package. Most of the rest of the announcements made in VW's annual report we either already knew about or are of little interest, but the document also confirms new Lamborghinis on the way, including two new versions of the Aventador (likely to be the new SV coupe we just saw and an SV roadster) and three more of the Huracan as well, including two Spyder versions of the latter.