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BMW M3, M4 let loose on the 'Ring

We just posted our first drive of the 2014 BMW 435i yesterday, but for those wanting even more power from this stylish coupe, help is on the way. From the sounds of it, BMW will be showing off a production-ready concept previewing the M4 next month at the Pebble Beach Concours d'Elegance, but until then, we have some new spy shots of the performance coupe being tested at the Nürburgring, along with its four-door counterpart, the M3.
Despite all the camouflage, it doesn't take much imagination to picture what both cars will look like, since we can clearly see the more aggressive front fascia and beefier brake setup. One interesting element we see on both cars is a double bubble roof that is almost certainly made from carbon fiber. Based on our report earlier, both the M4 Coupe and M3 Sedan are expected to debut at the 2014 Detroit Auto Show.

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.

The Homer to contest 24 Hours of LeMons

It's finally happened. A 24 Hours of LeMons team has built the definitive interpretation of The Homer from The Simpsons for competition in an upcoming race. As you may recollect, The Homer is the fictional car designed by Homer Simpson for his brother's car company. Designed with a separate compartment for screaming children and other Homer-centric goodies, the animated machine bankrupted its parent company and put Homer's brother out of a job. Now we get to watch it race other crap cans as it tackles Southern California's Buttonwillow Raceway on June 29. Scott Chamberlain, Kris Linquist, Reid Conti, Ben Reilly and Mike Yepes will helm the machine, and Jeff Herman serves as the team's creative director.
The racer is the latest incarnation of a well-abused BMW 3 Series. The team campaigned the same E30 under the "Prickstine" banner as a Chrysler Imperial tribute and "Porcubimmer," the latter being a riff on the ever-popular joke about the difference between porcupines and BMW models. Never gets old. You can check out a video of the finished Homer below, and be sure to like the team on Facebook to see updates from the race. Now, about that Canyonero...