Quote:
Originally Posted by 996ttelise
Gearing and tires could make a difference. Would the Giulia hook up as well 01-60 range with PSSs. I know Rs can make a pretty substantial impact on braking and cornering.
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Based on the different tests so far, it seems that the Giulia does indeed launch much better that the M3, very much likely because of the sticky r-compound tires. But it has to be noted that the Giulia-Q also keeps pulling stronger than the M3 even as the speeds build up. So it is not only a question of tires.
Quote:
Originally Posted by 996ttelise
The Competition Pack is also rolling 20s so the unsprung weight would seem to be a little higher also . . . Unsprung weight can make a difference.
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You probably mean "rotating mass" here, as "unsprung weight" has no incidence on acceleration per se.
The mass factor of a wheel-tire combo is about 2X, so even if the 20" wheels on the M3 are a few pounds heavier, it is rather negligible on the grand scheme of things, the Giulia will still have a higher effective mass than the M3 (effective mass takes into account the inertial effect of rotating mass).