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Vorsteiner BMW M4 GTRS4 shows how to do a widebody at SEMA

Part of the joy of the SEMA Show is that all of the best tuners in the world are competing to show off their wares, and the challenge often pushes the companies into some absolutely insane directions. Case in point: Vorsteiner and its ludicrous GTRS4 wide body kit with the BMW M4.
According to Auto Evolution, the kit reportedly adds 4 inches in the front to fit 10.5-inch-wide wheels and a massive 7-inches more in the rear to snug in 13.5-inch-wide wheels, but spinning around the BMW in these images makes the changes look even more extreme. Beyond just the extra room in the fenders, the lower air intakes are ready to suck in huge volumes of cool air, and there's a front splitter to keep things planted. The front and rear extensions are joined by side sills that grow the farther back they go. Finally, at the rear, the M4 gets a reworked diffuser with mesh inserts.
This is just the type of automotive craziness that makes SEMA interesting. Take a lot at it for yourself in the gallery.

2016 BMW M3 and M4 recalled for driveshaft problem

The Basics: BMW is recalling 42 examples of the 2015-2016 M3 built from May 30, 2015, to September 2, 2015; the 2016 M4 Coupe made from July 3, 2015, to September 11, 2015; and the 2015-2016 M4 Convertible manufactured from May 29, 2015, to August 4, 2015. The Problem: The company might not have filled a driveshaft slip joint with grease, and the part can potentially fail over time. If this happens, the vehicles could lose power to the rear axle. Injuries/Deaths: None reported. The Fix: BMW dealers will inspect the driveshaft and replace it as necessary. If You Own One: BMW will begin the recall on January 8, 2016. An FAQ (as a PDF) says the vehicles are still safe to drive. More Information: BMW issued two other recalls for similar models this year. An airbag problem prompted a campaign for 2,067 examples of the 4 Series Convertible in March. A fuel pump issue in April also forced repairs to the 3 and 4 Series, in addition to the 2 Series. RECALL Subject : Driveshaft Slip-Joint may not have been Greased Report Receipt Date: NOV 23, 2015 NHTSA Campaign Number: 15V782000 Component(s): POWER TRAIN Potential Number of Units Affected: 42 All Products Associated with this Recall Vehicle Make Model Model Year(s) BMW M3 2015-2016 BMW M4 2015-2016 Details Manufacturer: BMW of North America, LLC SUMMARY: BMW of North America, LLC (BMW) is recalling certain model year 2015-2016 M3 Sedan vehicles manufactured May 30, 2015, to September 2, 2015, 2016 M4 Coupe vehicles manufactured July 3, 2015, to September 11, 2015, and 2015-2016 M4 Convertible vehicles manufactured May 29, 2015, to August 4, 2015. The affected vehicles have a driveshaft with a slip-joint that may not have been filled with grease. As a result, the slip-joint may fail over time. CONSEQUENCE: If the slip-joint fails, there would be a loss of power to the rear axle and therefore the vehicle would stop moving, increasing the risk of a crash. REMEDY: BMW will notify owners, and dealers will inspect the driveshaft, replacing it as necessary, free of charge. The recall is expected to begin January 8, 2016. Owners may contact BMW customer service at 1-800-525-7417. NOTES: Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

BMW to offer carbon fiber wheels in a year or two

The Citroën SM sat on the first set of production glass fiber and resin wheels in 1972 when parent company Michelin developed the exotic hoops in order to take the SM rallying. It wasn't until 2008 that we got the first all-carbon-fiber wheel for passenger cars in the form of a prototype model from Weds Sports in Japan that remained a prototype. Australian company Carbon Revolution followed that a year later with its CR-9 all-CF wheel, first introduced on the Shelby Ultimate Aero and now available for independent purchase for about $15,000 per set. BMW could be the first OEM to offer entire wheels in carbon fiber reinforced plastic in two years.
The wheels - either all-CFRP or using a CFRP rim and alloy spokes - were shown off during BMW's Innovation Days in Munich and are products of the development work done on its i-branded cars. The full-CFRP wheel is 35-percent lighter than a forged alloy wheel, the hybrid alloy and CFRP wheel is 25-percent lighter, making for a decent drop in unsprung rotating weight. As demonstrators during a tech day the wheels aren't yet in the pipeline for production and EU approval, but an article in Auto Express claims that they could be on the market as soon as two years from now.
Other possible parts include a full carbon fiber steering wheel and propeller shaft, the latter of which is coming as a single-piece component on the new M3 and M4. BMW is also talking up its use of secondary carbon fiber - waste material from i3 and i8 production - that can be used for items like IP support structures, seat frames and spare wheels in place of traditional metals like aluminum and magnesium. There's an excerpt of the Innovation Day press release below with more details.