In Reply to: Re: 323i Sport vs. 328i Sport posted by Gilbert on March 07, 1999 at 09:29:39:
: If not the same then nearly the same. The 323 tested in both cases did not have sport package. The standard tires(on 323) are 'high profile' touring tires. The 323 sport package has different wheels tires. (323:225/50-16 328:225/45-17) I don't know if anyone (outside of BMW) knows if the springs are different. The cars are only 50lbs different, so I would think the springs are the same.
Since suspensions are comprised of springs, shocks, struts, torsion bars and the like, not wheels and tires, it is pretty likely that the springs and struts in the Sports Package differ in some manner from the standard suspension.