Load capacity is 400 lbs. total, that includes you and your passenger. If you weigh 200 lbs and your passenger weighs 115 lbs. that means you have 85 lbs left for your luggage, golf clubs, amps, tools, radar detectors, etc. before you exceed the "official" load capacity.

That being said I have exceeded the load capacity with a passenger on the race track. The car handles a little differently, and my top speed at the end of the main straight is easily 3 to 5 mph slower than when I'm alone in the car.

 

oh so i guess i'm not sacrafacing that much with this, i guess i kinda got a little worried i'm gonna go look for three djs to fit in my trunk now haha thanks for all your help everyone
3-5mph slower hmmm oh well to me its worth the loss to some it might not be worth it but i'm not out to race my s2000 all the time anyway

 

Main reason for 400lb limit. I'm pretty sure that is the limit in a vette too.