2003 Bmw Z4 2.5i on 2040-cars

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BMW rolls out new M4 safety car for DTM

Ever since revealing the M4 on nearly five months ago, BMW has been hard at work getting its new muscle coupe out on the track. It's made a touring-car version to compete in DTM and a safety car to set the pace at MotoGP races, and now it's combined both into a new safety car for DTM as well.
The ninth M4 on the DTM grid is based on the production version, but fitted with numerous upgrades over the course of a two-month conversion process. For starters, it's been equipped with nearly exterior component from the M Performance Parts catalog, including the quad-tipped exhaust, front splitter, rear spoiler and diffuser, blacked-out grille, special mirror caps, side sills... the works. But that's not the end of the story.
BMW M GmbH also gutted the interior, removing the rear bench and replacing it with a roll cage. It's got a pair of Recaro racing buckets with Schroth harnesses, plus special LED emergency lighting, radio communication system and, of course, special livery (albeit nowhere near as cool as the MotoGP one) to distinguish it as the official safety car when it makes its debut at the Nürburgring on August 17.

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.

American motorcycle brands most satisfying, Japanese most reliable, says Consumer Reports

Consumer Reports started tracking motorcycle reliability last year through its regular reader survey, just like the magazine's well-known auto guide. For the 2015 edition, CR now has data on over 12,300 bikes, compared to 4,680 in 2014, and the extra info means it can include more brands, like Suzuki, Triumph and Can-Am, to the list. However, the final results remain largely the same. As with last year, Japanese bikes are the best choice for buyers who prioritize reliability. Yamaha comes out on top yet again and is followed by Suzuki, Kawasaki and Honda. Victory and Harley-Davidson hold the middle of the list, and the European cycles from Triumph, Ducati and BMW sit at the bottom. The major outlier in this regional distinction is the Can-Am Spyder from Canada's Bombardier Recreational Products that comes in dead last in the dependability survey. Still, even the most dependable model is occasionally going to break, and the average repair bill across all brands is $342, according to CR's readers. Kawasakis are the cheapest to keep on the road at a median of $269 for fixes, versus BMW as the most expensive at $455. Through all of the companies, electrical gremlins are the most common issue, causing 24 percent of problems, but faults with the cooling system, pistons or transmission are the smallest concerns at 4 percent each. While Japanese cycles might be the easiest to keep on the road, they aren't the most beloved by riders. In CR's gauge of satisfaction, the Americans reign supreme. Victory owners love their bikes the most with 80 percent reporting that they would buy another. Harley riders are known for having a close bond to the company's models, and the brand comes in second with 72 percent. Finally, Honda rounds out the top three at 70 percent. Head over to Consumer Reports to see more results. News Source: Consumer ReportsImage Credit: Toby Brusseau / AP Photo BMW Honda Suzuki Motorcycle Ducati bike victory