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#1
10-26-2006, 08:15 PM
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BMW X5 E70: New Front Suspension = Double Wishbone
Any opinions out there ??? http://suv-buster.blogspot.com/2006/...-wishbone.html  BMW has decided to get rid of the good old MacPherson strut front suspension in favor of less reliable but much more comfortable double wishbone suspension. The new design will be first employed on the new BMW X5 SUV and will later come to the rest of BMW's model range.BMW has made this decision because it really wants to make the upcoming BMW X5 E70 a seven-seater but the SUV itself lacks the room to put the third row of chairs. To get some additional space, BMW's engineers decided to throw away the spare tire and put the vehicle on run-flats. The problem is that the run-flat tires are known for their harsher ride, which could not be balanced with the MacPherson. So, there came double wishbone aka control arm suspension.  The new suspension has its own disadvantages, such as higher center of gravity, so the company plans to make the upper arm of from cast aluminum and the lower arm of heavy cast iron, since the X5, set to compete against the latest Mercedes-Benz M-Class and Audi Q7 is a pretty heavy piece of gadgetry. Double wishbones for other Bimmers will certainly be made of aluminum alone, Inside Line is reporting.
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Bo knows 'X' _____________________ 2001 X5 4.4 (Retired) 2003 X5 4.4 (Retired) 2006 X3 3.0 2007 X5 4.8 (Cancelled Order) _____________________ Last edited by Bo knows X; 10-26-2006 at 08:44 PM. 
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#2
10-26-2006, 09:19 PM
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Less reliable? I guess it shouldn't be surprising that a site called suv-busters is posting such non-sense. Double wishbone setup is THE most optimal setup for performance: it has basically perfect camber control. A MacPherson setup is most commonly used because it's the cheapest and least space-engaging.
Cliffnotes: switching to double-wishbone shows that BMW is very serious about the X5's handling.
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#3
10-27-2006, 03:54 PM
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Quote:
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Dinan M3 2006 X5 4.4i Sport Current Vehicle 2006 CLS 55 AMG Current Vehicle 2010 FORD F-450 King Ranch Current Vehicle 2012 GL 550 Current Vehicle 1999 M3 Dinan S3 SOLD 2001 M3 Dinan S2 SOLD 2002 M5 SOLD 2004 X5 4.4i sport SOLD 2007 335 XI Lease ended 2009 E92 M3 SOLD
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#4
10-27-2006, 06:33 PM
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Here is one by Edmunds
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#5
10-28-2006, 12:01 PM
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Don't the newer BMWs (new 3, 5 at least) use the wishbone ones already?
Honestly, if there's nothing wrong with the struts, keep them!
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