A lot depends on the thickness of the aluminum used for the mounting surfaces. Nearly all American vehicles are "LUGCENTRIC" whereas a lot of high priced foreign cars are "HUBCENTIC".

As long as the wheels lug holes are finished for the correct mounting procedure acorn could be fine but you might need an aluminum centric lug with a shaft to make up for the thickness of the mounting surface.

Check with the Tire Dealer that will be mounting your tires... He's the best source of information. Or Even the wheel manufacturers FAQ site.

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2006 Ford Ranger XL Std Cab 2.3L 5Spd 4x2