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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.

Ferrari 458 Speciale vs Porsche 911 GT3 shows what Chris Harris does best

After a brief trip behind a pay wall, British auto journalist Chris Harris is back posting videos for free online, and shorts like this one are the perfect example of why his return is so welcome. Showing up at the damp Anglesey Circuit on the Welsh coast with the Ferrari 458 Speciale and Porsche 911 GT3, Harris ostensibly aims to find the better model. However, the final result really succeeds in showcasing the fun to be had behind the wheels of both supercars, particularly when initiating huge slides around the track. As Harris presents it, the vehicles get through the circuit in somewhat different ways The Ferrari is brash and "feels alive," as he puts it as it screams around the track. Alternatively, the Porsche is a bit more restrained, while still being able to show some emotion. In the end, it comes down to trying to get a controlled lap around Anglesey from this duo, but it's pretty clear that the times don't tell the whole story. If you're in the mood to watch two of the world's premiere supercars wag their tails in the wet, then this video cannot be missed.

Porsche announces plan to replace 911 GT3 engines

About a month back, we reported that Porsche was suspending delivery of its 911 GT3 due to reported incidents of the engine bursting into flames. A few days later, Porsche told owners of the new track-ready models not to drive their cars and had their local dealers pick up the cars in question. Just a couple of days ago, we reported that Porsche was working on a fix, and now we have the official details.
Following an internal investigation prompted by two such incidents, Porsche has confirmed that is has identified the problem as resulting "from a loosened screw joint on the connecting rod." The loose connecting rod, Porsche found, damaged the crankcase, which in turn resulted in oil leaking and then - in at least two cases - igniting.
Our source is unaware of Porsche being contacted by GT3 owners concerned about the impact of a replacement engine on their car's collectibility or resale value.