Thread: The BMW Z4 M Roadster is safe sex on wheels.
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Re: The BMW Z4 M Roadster is safe sex on wheels. - 05-31-2006, 01:09 AM
Quote:
Originally Posted by EniLab
Yes. Drag coef.
Coupe: 0.35
Roadster: 0.38

Torsion coefficient (Nm/deg) shows the torque required to twist a body through an angle of one degree. The higher amount of torque is needed to twist a body for one degree, the stiffer the body is.

E.g. Torsion coeficient of Z4 M Roadster is 14,500Nm/deg (while Z4 M Coupe's is 32,000Nm/deg).
A difference of 17,500Nm is absolutely huge! I had no idea it was that big at all. What I don't understand is, why is the M6 convertible getting all the treatment and not the Z4? To keep the cost down?
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