I've been reading a bit lately about the front/rear weight distribution of the Z and opinions on what is the optimal distribution.

I'm wondering... is this measure usually taken with the driver in the car or sans driver? Also, is there anyway to measure this during acceleration when weight transfer will shift more weight onto the back of the car?

I've read, though the 350Z has a 52/48 weight distribution, it actually is close to 50/50 with the driver on board. Is there any place I can find stats like this for other cars... especially those reputed to be 50/50? Just wondering how much they may change with a driver on board.

Finally, I'd like to hear the opinions of some AutoX-ers out there... How much to you think weight bias plays into driving/lap times? And what would you say is an acceptable range before reaching "man that car is too nose/tail heavy!"

Thanks for your input!!!