2011 Z4 Convertible Power Hardtop Florida 1 Owner on 2040-cars

Auto blog

Check out the trick way you access the tire valve on this BMW Alpina B6

The wheels are one of the first things you notice when checking out the 2015 BMW Alpina B6 xDrive Gran Coupe. The 20-inch aluminum alloy rollers have 21 spokes that spray out from their hubs, creating one of Alpina's signature design features. But there's also plenty of function to go along with the stylistic form of this hotted-up BMW 6 Series Gran Coupe.
By rotating the Alpina roundel and unlocking the center hub, you gain access to the tire valve and bolts, which are hidden inside. They're literally kept under lock and key, and they protect your Alpina's wheels from the elements and theft. This unique center-fill system employing a hollow spoke isn't a new setup for the favored BMW tuner, but since Autoblog had one in our offices this week, we thought we'd take the opportunity to show the unique mechanism in case you haven't seen it before. Check it out in our brief video below.

Tier 1 suppliers call GM the worst OEM to work with

Among automakers with a big US presence, General Motors is the worst to work for, according to a new survey from Tier 1 automotive suppliers, conducted by Planning Perspectives, Inc.
The Detroit-based manufacturer, which has been under fire following the ignition switch recall and its accompanying scandal, finished behind six other automakers with big US manufacturing operations. Suppliers had issues with trust and communications, as well as intellectual property protection. GM was also the least likely to allow suppliers to raise their prices in the face of unexpected increases in material cost, all of which contributed to 55 percent of suppliers saying their relationship with GM was "poor to very poor."
GM's cross-town competitors didn't fare much better. Chrysler finished in fifth place, ahead of GM and behind Dearborn-based Ford, which was passed for third place this year by Nissan. Toyota took the top marks, while Honda captured second place.

BMW 328d confirmed for New York debut

Late last year, some of BMW's future diesel plans for the US market were leaked, and we learned that a diesel-powered version of the 3 Series sedan (pictured above in 335i guise) would be coming in the first quarter of 2013. That report appears to be holding true, as BMW has just confirmed the debut of the oil-burning 328d sedan as part of the company's New York Auto Show plans.
The 328d will be powered by a turbocharged four-cylinder diesel engine good for 180 horsepower and 280 pound-feet of torque. The rear-wheel-drive sedan will hit 60 miles per hour in 7.2 seconds and fuel economy numbers could "well exceed" 40 miles per gallon. (Official EPA numbers will be released closer to the car's launch.)
Elsewhere on BMW's New York stand, the company will show off the 3 Series Gran Turismo that debuted at the Geneva Motor Show earlier this month, as well as the Concept Active Tourer that we first saw in Paris last fall. Scroll down for the official press blast.