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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.

BMW X1 testing is underway

It was just a few weeks ago that we got our first glimpse of the next-generation BMW X1, riding around on a flatbed. Now, we have the first batch of images of the small crossover moving under its own steam.
Like the previous round of photos, BMW's psychedelic camouflage is on hand to obscure sheetmetal details, but our intrepid spies still managed to discover a bit about the new X1. It's internal code-name will be F48, and it will sit on the same platform as the next-generation Mini and the BMW 1 Series GT. And for those keeping track at home, those are both front-drive platforms.
The reasoning for the X1's new layout, though, is understandable. Front-wheel drive is more space efficient and affordable, which are kind of big deals to customers. The next X1 won't be limited to its front wheels, though, as BMW's xDrive system is almost a certainty on higher-end trims.

Jay Leno puts focus on some retro-inspired BMW bikes

Jay Leno puts eight wheels on display this week for Jay Leno's Garage from a quartet of retro-inspired BMW motorcycles. They are the creations of husband and wife team Larry and Carol Romestant, who build each one in their home garage.
Larry is a former aerospace engineer who loves BMW bikes, especially the K models. Now, he's combining his passion with a real talent for fabrication to build his own cycles with his wife. With Larry and Carol the only ones working on these projects, it takes them six to nine months to build each one. In addition to the old-school looks, the motorcycles are supposed to be a bit more user friendly than stock. For example, one of them ditches the standard five-speed gearbox in favor of a six-speed unit to be a little more comfy when cruising at high speeds.
Since there isn't enough time to take all four of them for a ride, Jay picks his favorite to test out on the open road. Scroll down to see which one he chooses.