I checked out a couple of biographies of Timur last week and they both were a bit disappointing. I didn't read all of either of them.
Beatrice Forbes Manz's The Rise and Rule of Tamerlane is fairly short and she is an expert on the subject, but the book was pretty boring, even technical. Not what I wanted, although she doesn't spend all her time on Timur's wars.
Justin Marozzi's Tamerlane: Sword of Islam, Conqueror of the World, however, spent nearly all his time on battles. This isn't really surprising in a bio of Timur, but still, it was a bit much. Marozzi also isn't a Central Asia person. I wanted an author who cared about Central Asia, not just who travelled there to research Timur.
But what really sealed this book's fate was Marozzi's insistence on calling Timur a Tatar. He was not a Tatar, but a Turk from the Barlas tribe. Marozzi admits in a footnote early on that that European "Tartar" is not always synonymous with "Tatar," but really, it rarely is and is not at all in this case. I thought this was a serious error especially since it was perpetuated throughout the entire book.
Maybe I'll try another bio of Timur someday.