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      02-16-2011, 01:44 PM   #6
MA78
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Drives: 2011 X3 35i
Join Date: Nov 2007
Location: Portland, OR

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Quote:
Originally Posted by Lotus7 View Post
Sorry, No. The F25 chassis X3 uses high-strength stamped steel for the upper and lower control arms in the multi-link rear suspension and also uses a forged steel lower control arm in the front strut suspension. The front arm is plated and sure looks like aluminum, but it is not.

The rear upper/lower arms are thin stampings and are just painted black. Aluminum is lighter than a comparable amount of steel, but the currently available high-strength steels can often make a part stronger than an alloy component and still weigh less and take up much less room.

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