Firstly i have never been a Motley Crue fan, (before reading this i thought Nikki Sixx was lead guitarist...) but i do enjoy a good rock (auto)biography.
Unfortunately the last two i had read had put me off for a while yes you Not Dead and Not for Saleand you My Appetite for Destruction: Sex & Drugs & Guns N' Roses
Both books with little memory of events. The Heroin Diaries works due to being written at the time but with added comments from band-mates, managers, etc. This gives the book better focus and the fact it concentrates on a year between Christmas 1986 to Christmas 1987 gives a better picture of a drug addicted rock-star and life recording an album and on tour.