not what you are asking, but stock crosslace rims (the lightest I have been told) weigh 13lbs each. 16 inch AE077s weigh 18lbs each. This was measured on my bathroom scale.
Steve
_________________________
97 GTP - 3.25, S1 cam, GPS PCM, P&P supercharger and lower intake, R/T downpipe and cat, Borla exhaust, AE077 rims, Lund scoops, SLP spoiler, and a heavy foot.