Originally Posted by kring

I don't believe anyone disagreed with you on the physics. But what we're talking about is how BIG an impact it has. Will putting a hat on your head make a noticeable difference in acceleration and handling performance? Will 50-60lbs on the roof really make a noticeable difference when you have over 300HP throwing you to 60mph in 5.3 seconds? how big an impact is that $3.26 in change I have in the center console?

IMO you won't really have a truly noticeable change until you get in the area of 200-300 lbs, and that's if you are keen to performance. The average Joe won't notice until 500lbs or possible even more, like a fully loaded car simply because they never push it to the limit where you could notice it.

I bet almost none of you have actually put your G to the limit and held it there for minutes.

I also recall that the Sunroof performance debate was not really about it's weight, I recall sunroofs impact on performance was about loss in structural rigidity of the frame, which resulted in some power being absorbed in the frames torque under high stress. and to that argument, I recall that the 07 is like 35% more rigid then the 06's.