Gee.....
....another thing to consider is tire weight (C vs. E; brand 1 E vs. brand 2, 3, 4, 5, 6 E tire weight)...reducing rotating mass will give you better acceleration. Also, a reduction in unsprung weight (heavier tires thus heavier wheels outboard of your suspension system) will change inertia in your suspension system and this plays havoc with your suspension geometry....now comparing LR E to LR F/G (look at the weight of a 19.5" rim + the more robust tire, and compare to a LR E on a 16 or 18 inch rim).
Generally: an LRC runs at lower air pressure (50psi); an LRD runs at 65psi; an LRE runs at 80psi; an LRF runs at 95psi..and LRH etc, etc,,,..each "range" has a specific weight carry capability (lower psi load range carries less weight).
Hey zeus, I hope I don't confuse things too much LOL!