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      02-15-2012, 04:06 AM   #13
cstavaru
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Drives: 2009 335i M Sport Sedan 6MT
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Nice article ! The suspension is very similar to the e90 suspension. The e90 even has some links in the rear made from aluminium. But I suppose BMW chose steel on the F30 to help offset the extra front weight due to the bigger front overhang and maintain the 50/50 weight balance front/rear.

You can lower the unsprung weight by 10lbs per corner by getting some well-chosen non-runflat tires (like Continental DW for summer or Continental DWS for all-season - they are both very light) and exchanging the wheels with 20lbs semi-forged wheels which can be had for about $900 a set and are quite strong. This way a wheel/tire combo will weight like 43lbs, as opposed to 53lbs. With this kind of setup I would bet you will gain like 0.4s in the 0-62mph sprint.
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