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Mini Cooper SE Convertible wheels made entirely from recycled aluminum

Mini has revealed an interesting fact about its limited-run Mini Cooper SE Convertible: It's the first production car with wheels made from 100% recycled aluminum. Despite sharing the same look as wheels available on the regular SE hatch, they're actually much more environmentally friendly. The wheels were developed with Swiss wheel manufacturer Ronal. The company sells aftermarket wheels under the Ronal and Speedline brands, and it supplies OEMs. And it's no stranger to more environmentally-friendly wheel production. It supplies wheels for the Audi E-Tron GT that are made using a smelting process that produces oxygen rather than carbon dioxide, and it now has a line of claimed carbon-neutral aftermarket wheels. But back to the Mini's wheels. Using all recycled aluminum has the obvious benefit of not requiring new aluminum to be manufactured. But the benefits are greater than just the raw material use. Mini points out that a major improvement in carbon emissions comes from being able to skip the electrolysis process for new aluminum manufacturing. Pure aluminum is extracted from aluminum oxide (which is in turn taken from the mineral bauxite). To do this large amounts of electricity are passed through molten solutions of aluminum oxide and cryolite (which takes energy to heat) across graphite cathodes and annodes. Not only does this use a lot of electricity that has its own carbon costs, the oxygen that separates from the aluminum bonds to the graphite annodes, yielding more carbon dioxide (which is why the production of those Audi wheels is also interesting). In total, Mini says the recycled wheel production reduces carbon emissions by 75%. More specifically, it estimates about 0.16 kilograms (0.35 pounds) per kilogram (2.2 pounds) of aluminum used. Mini also stresses that this process still maintains all the strength of conventional wheels, just in a greener way. And of course, the wheels themselves are recyclable again. Mini, and BMW more broadly, are looking at ways to upscale the process and to source suitable recyclable products, likely other old wheels from cars no longer on the road. Though neither company said anything about when we'll see fully recycled wheels more widely available. Related Video: MINI Electric Pacesetter inside and out

BMW 3 Series GT gets nip and tuck

We brought you spy photos of the refreshed BMW 3 Series sedan, and now the versatile, hunchbacked Gran Turismo has been caught on camera. As far as refreshed Bimmers go, the treatment for the 3GT is pretty typical. That means a new front bumper and headlights, which we doubt have been changed all that much from the freshened four-door. Changes in back differ thanks to the GT's unique rear end, but the new features – new LED designs in the taillights – will be there. It also looks like BMW has tweaked the rear bumper. Like the sedan, the 3GT will get a few interior tweaks and an iDrive update. Basically, everything we showed you back in May when the updated sedan debuted should find its way onto the 3GT. What we don't know – and what our spies can't tell us – is whether BMW will add GT versions of the 3er's newest models, the 340i and 330e plug-in. We'd expect the 340i to replace the range-topping 335i Gran Turismo, just like it has on the sedan – although a hunchbacked, plug-in hybrid hatchback might just be a bit too niche, even for a brand like BMW. Check out the short gallery of spy photos, available up top. Related Video: Featured Gallery BMW 3 Series Gran Turismo: Spy Shots Image Credit: CarPix Spy Photos BMW Hatchback Luxury bmw 3 series gran turismo

Check out the trick way you access the tire valve on this BMW Alpina B6

The wheels are one of the first things you notice when checking out the 2015 BMW Alpina B6 xDrive Gran Coupe. The 20-inch aluminum alloy rollers have 21 spokes that spray out from their hubs, creating one of Alpina's signature design features. But there's also plenty of function to go along with the stylistic form of this hotted-up BMW 6 Series Gran Coupe.
By rotating the Alpina roundel and unlocking the center hub, you gain access to the tire valve and bolts, which are hidden inside. They're literally kept under lock and key, and they protect your Alpina's wheels from the elements and theft. This unique center-fill system employing a hollow spoke isn't a new setup for the favored BMW tuner, but since Autoblog had one in our offices this week, we thought we'd take the opportunity to show the unique mechanism in case you haven't seen it before. Check it out in our brief video below.