As stated in this question (How Big is Hagrid?); descriptions of the size of Hagrid change throughout the books-
"He was almost twice as tall as a normal man and at least five times as wide." Harry Potter and the Philosopher's Stone - Chapter 1
And then in later books:
"About twice as tall as a normal man, and at least three times as broad" Harry Potter and the Goblet of Fire - Chapter 12
Did descriptions of Hagrid's size change due to how Harry perceived him?
Was it due to the portrayal of Hagrid in the films? Even so, Hagrid only appears to be taller than average in the films, not wider.