Nigel Mansell's 1991 F1 championship charge effectively ended at the Portuguese Grand Prix that year, when a wheel departed from his Williams as he pulled away from his pitstop. 

Host Glenn Freeman is joined by Edd Straw and Sam Smith to look back in detail at what went wrong in the pits for Williams at Estoril, on a weekend where Mansell's team-mate Riccardo Patrese took an 'easy' win, and Ayrton Senna banked valuable championship points while also taking a swipe at Mansell's aggressive driving at the start of the race. 

We also look back on Jordan sacrificing its competitive aims for 1992 to make sure it stayed afloat, serious trouble for the Leyton House team, Ford's complaints about F1's engine war, how badly a Minardi-Porsche partnership would have gone, and how Max Mosley caught Jean-Marie Balestre out ahead of their battle for the presidency of FISA.