2003 Bmw Z4 5 Speed Manual Convertible Premium Heated Seats Power Top Warranty on 2040-cars

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BMW M4 vs. Lexus RC F in Head 2 Head sports coupe showdown

It's the showdown everyone's been looking forward to, the East versus West grudge match of the year. We're talking, of course, about the BMW M4 versus the Lexus RC F.
Although BMW uses a twin-turbo straight-six and the Lexus uses a free-breathing V8, the two are pretty closely matched on paper: a luxury coupe with over 400 horsepower channeled to the rear wheels.
The BMW has been doing these cars for longer, and the M4 boasts a higher power-to-weight ratio. But then the RC F has more power - and without forced induction to break up the rev range. So which is the better luxury muscle coupe? Watch the latest episode of Motor Trend Head 2 Head to find out.

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 reveals i8 Concours d'Elegance Edition ahead of Pebble Beach

If you want to be among the first owners in the United States of the new BMW i8, the Pebble Beach Concours d'Elegance will be the place to be next Saturday. That's where Gooding & Company will auction off this one-of-a-kind hybrid supercar.
The BMW i8 Concours d'Elegance Edition was previously slated to be the very first i8 in North America, but has now apparently been downgraded to the guarantee of being among the firsts. In any event, it packs a series of special touches to make it unique. For starters, it's decked out in matte grey with unique brown leather upholstery, blue accents and Pure Impulse Tera World trim, with BMW i8 logos embossed into the headrests, special treat plates and the signatures of several key BMW personnel on the rear parcel shelf.
Pending government approval, it's set to be the first vehicle in the US fitted with laser headlights, and comes equipped with a special key, Louis Vuitton luggage and a "professional edition" BMW Charging Station. Scope out all the details in the press release below and take a closer look in the gallery above.