Other 1995 540i M-Sport Pages The Definitive Guide Is it a REAL M-Sport? Build Details of the 135 (or 138?) 6-speeds 1. What is the history of the BMW 540i through the E34? The third generation 5 Series started arriving in late 1987. Totally redesigned, very similar to the 7 series, the new body was stiffer, offered less wind resistance, improved upon the front/rear aerodynamics and improved crosswind stability.