I can tell you that Really Right Stuff definitely underestimates their tripod load ratings. Their TQC-14 is their lightest set of legs, and it's rated for 25 lbs. I think that RRS owner Joe weighs a little more than that...



I'm 180 lbs., and I've tried that with my TQC-14.

FWIW, RRS recommends their Series 1 (TQC-14, equivalent to Gitzo 2-series) for up to 200-300mm, their Series 2 (TVC-2x, 40 lb rating) for up to 300-400mm, and their Series 3 (TVC-3x, 50 lb rating) for up to 800mm. They now have a Series 4 with a 100 lb load rating that could probably support a small car.