The rules below dictate the tube diameter for various car weights. How do these rules apply - for actual car weight, or classed car weight?

My ITS car might be classed at 2600 lbs but with me in it with fuel it weighs 2750 lbs.

-------------
The following table shows the minimum allowed tubing outer
diameter and wall thickness by vehicle weight:

GCR Vehicle Weight Tubing Size (inches)
(outer diameter x wall thickness)
Up to 1700 lbs 1.375 x .080

1701 - 2699 lbs 1.500 x .095
1.625 x .080

2700 lbs and up 1.750 x .095
1.625 x .120

If the tubing diameter used is at least .250 inch above the
minimum diameter required, based on vehicle weight, the
minimum wall thickness may be .080 inch.