The race weekend began with some changes to the drivers' lineup: Jacky Ickx was fired from the Walter Wolf Racing team and was replaced by Arturo Merzario, and a new team was present, Scuderia Rondini, which bought an old Tyrrell 007 for Alessandro Pesenti-Rossi. RAM was going to run Rolf Stommelen in one of its ex-works Brabham BT44s, but in the middle of the practice session the local police impounded the cars (because of a legal action by former driver Loris Kessel) and, as a result, Stommelen transferred to the works Brabham team to drive a spare Alfa-Romeo-powered BT45. Lella Lombardi was also affected by the impound action as part of the RAM squad, but could not find a replacement drive.
