The 1965 24 Hours of Le Mans was the 33rd Grand Prix of Endurance, and took place on 19 and 20 June 1965. It was also the twelfth round of the World Sportscar Championship. After the disappointing results of the previous year's race, Ford returned with an improved version of its GT. There were 11 Fords or Ford-engined cars in the field. To meet that challenge, Ferrari had no fewer than 12 of their cars. Porsche dominated the medium-engined category with seven cars and Alpine-Renault likewise dominated the small-engine categories with six entries. Despite a strong start, in the end the Fords’ unreliability let them down again and it was an easy victory for Ferrari for the sixth successive year. After the failure of the works team, the winners were Masten Gregory and Jochen Rindt in the North American Racing Team (NART) car – the first non-works team to win since Ecurie Ecosse in 1957. It was also the first international race victory for Goodyear tyres. Perhaps surprisingly given their domination of the race it would prove to be, to date, the last Ferrari victory at Le Mans. Regulations In the year since the last race, plans had got underway to develop a permanent track. Charles Deutsch, erstwhile French car manufacturer, was the design consultant for the project that eventually became the Bugatti Circuit. After the dangerous accident in the previous year's race when a car had crashed into the busy pits, protective barriers were put in front of each pit, although the pit-lane itself was still exposed. Otherwise the only significant change was that the fuel tank on cars with an engine bigger than 5.0 litres was increased to 160 litres (35 gallons). There were slight tweaks to the calculation of the two Indices and the minimum engine size was set at 1000cc. Entries The ACO received 89 entries but after the selection process, withdrawals and no-shows there were 51 cars at the start. The proposed entry list comprised: This year there was a renewed interest from the manufacturers and their works teams with 42 works-supported entries amongst the starters. After a slow start to the season, Ferrari introduced the new P2 design from Mauro Forghieri at the April test weekend, and the following 1000 km Monza race. A range of V12 engines were fitted: The works team had two 4.0-litre 410 bhp open-top cars for F1 world champion