1998 Bmw Z3 M Roadster Convertible 2-door 5-speed Amnual 3.2l on 2040-cars

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Alpina bringing new B4 Bi-Turbo Cabrio to Geneva

Interested in picking up a new BMW 4 Series with a turbo six? You've got options: you can get the 435i with 300 horsepower or spring for the M4 with 425 hp. But if it's the convertible model you want, we're afraid you'll be limited to the latter as the M division can't help you (at least not for the time being). But that's where Alpina comes in.
The aftermarket tuner closely associated with BMW offers the B4 Bi-Turbo (at least in Europe) with that same 3.0-liter twin-turbo inline-six massaged up to 410 horsepower that starts to pose a threat to the M4. What's more is that the Alpina's 442 pound-feet of torque eclipses the M4's 406 lb-ft, to say nothing of the 435i's 300.
Best of all, Alpina just confirmed via Facebook that it'll offer the B4 in convertible form, bringing the resulting BMW Alpina B4 Bi-Turbo Cabrio to the Geneva Motor Show. We'd expect the weight penalty to knock it slightly off the coupe's quoted 4.1-second 0-60 time, but not by much. If only BMW were to bring this one Stateside like it does with the B7 sedan.

2013 Dinan S3 BMW 550i

Steve Dinan has been enhancing BMW models since 1979. But don't throw his company into the ring with the dozen or so other tuners who tweak, tinker and piggyback upgrades on the famed German marque. Dinan is a tuner, but it's also an engineering firm that writes its own software, builds its own parts and then backs everything it does with a factory-grade warranty. That sort of fastidiousness comes at a price, but most of its customers - including the powerhouse of BMW Motorsport - rely on Dinan to help them come out on top.
In stock form, BMW's 550i is a formidable four-door with a twin-turbocharged 4.4-liter V8 rated at 400 horsepower and 450 pound-feet of torque. While those figures allow it to run with quick company (0-60 in 5.0 seconds, according to the automaker), Dinan puts the sedan's kettle on full boil with its S3 package. Starting with the engine, the performance engineering firm bolts on larger turbochargers, air-to-water intercoolers, a trick strut tower brace cold air intake, a quad-pipe free flow exhaust and its own engine management software. Pump in some premium fuel, and the result is 542 horsepower and 587 pound-feet of torque. Power is sent through the stock eight-speed automatic to a limited slip rear differential (Dinan will upgrade xDrive all-wheel drive models, too).
The Dinan S3 also features and extensive suspension upgrade that includes new front camber arms and low compliance rear control arms (engineered to reduce understeer and improve turn-in). The stock dampers are retained, but new bump stops are installed along with new springs. Overall, the car rides about a half-inch lower than stock to improve roll rate. To reduce unsprung weight, forged 20-inch HRE Performance wheels are fitted at all four corners (wearing Michelin Pilot Super Sport tires - 275/35ZR20 up front and 295/35ZR20 in the rear). Lastly, the company remaps the factory Electronic Damper Control (EDC) software with its own Dinan Shockware to work in conjunction with the new enhancements.

China's auto sales continue to drop

The days of unending growth of carmakers in China look to be over, and some analysts are even forecasting a net drop in volume this year, The Detroit News reports. After falling numbers in June and July, the China Association of Automobile Manufacturers tallied total sales, including trucks and buses, in August to 1.7 million, down 3 percent from 2014. There were some tiny specs of good news in China, but there's no turnaround in sight. Total vehicle sales from January to August are actually still up but only 2.6 percent. Like the rest of the world, SUVs are booming with numbers up 45.6 percent from the previous year. Honda managed a very impressive 50.7 percent gain on the strength of the CR-V and Vezel (the HR-V here), according to The Detroit News. Also, the country's domestic automakers, which generally offer less expensive products, posted a 2.5 percent growth in sales. The news continues to look bad for Detroit's automakers, though. Volume from General Motors dropped 4.8 percent in August, and Ford fell 3 percent in August. Both of them have invested significant amounts there in the past years. The vehicle industry in China grew last year, but there was burgeoning evidence of weakness. At the end of 2014, dealers there pushed back against huge inventories pushed by automakers. Even before the big drops began in June, GM saw the writing on the wall and started cutting prices. BMW responded to the slump by cutting back production to deal with the changing demand. News Source: The Detroit NewsImage Credit: Mark Schiefelbein / AP Photo BMW Ford GM Honda Car Buying