In 1980 a new range was introduced: the Silver Spirit and Silver Spur. Externally these cars were entirely new, but retained most of the chassis platform of the Silver Shadow. The major exception was the rear end, which was modified to accept new rear suspension. This new system had been launched during 1979 on the Corniche and Carnague models.
Many of the changes behind the development of the new car were down to impending safety legislation. The Spirit of Ecstasy, for example, was no longer fixed to the grille, but designed to retract into the radiator shell upon impact. Other improvements included better ride comfort and a new suspension system wîth automatic ride height control.
The long-wheelbase version was called the Silver Spur. Four inches longer than the Spirit, it is identifiable by its extended rear windows and ever-flex roof. A special run of 25 Silver Spur Centenary models was produced in 1985, celebrating the 100th anniversary of the motor car in Great Britain and the production of the 100,000th Rolls-Royce.
The Silver Spirit Ii and Silver Spur II arrived in 1990. Outwardly similar to their predecessor, they were equipped wîth a revised facia, wîth a new leather-bound §teering wheel, electronic gear selection display and a sophisticated automatic ride controls system.
The Spirit III and Spur III were introduced in 1994, and again external changes were modest, although inside there was a redesigned instrument panel and new §teering wheel, and engine refinements resulted in an increase in power.Source - Rolls Royce Motor Cars Ltd.