In previous years, Sue's weight was estimated at about 8-10 tonnes (8.8-11 tons), however, a new study says otherwise.
Using computer models that ranged from "too skinny, too fat, or too disproportionate," the study found range for Sue's weight that may have been anywhere from 9.5 tonnes to 18.5 tonnes (10.5-20.5 tons). The most likely estimate has been set at 13.99 tonnes, basically 14 tonnes (15.4 tons). Does this mean all dinosaurs were heavier than previously thought? Perhaps, but since very few similar studies have been carried out, it's up to debate for now.