Thomson Road Grand Prix circuit Thomson Road Grand Prix circuit The Thomson Road Grand Prix circuit was a former street circuit on Old Upper Thomson Road in Singapore. It hosted races from 1961 to 1973 under Formula Libre and Australian Formula 2 rules; races until 1965 are now considered part of the lineage of the Malaysian Grand Prix, and races after Singapore's independence in 1966 are considered part of the lineage of the Singapore Grand Prix. During the initial years, the main Motorcycle and Car Grand Prix lasted 60 laps, although this was eventually refined into two separate races - a preliminary 20 lap event
Brabham BT19 in a 3-litre works Ferrari. The 1966 world championship season opened with the Monaco Grand Prix. Brabham was affected by a cold, and qualified poorly before retiring when the BT19's gearbox failed. Surtees led the race in his Ferrari before his differential failed on lap 15; the race was won by Jackie Stewart in a 2-litre BRM P261. At the following Belgian Grand Prix at the Spa circuit, Brabham survived an enormous 135 miles per hour (215 km/h) slide in the rain on the first lap. The shower eliminated half the field, including Stewart, who would miss the next race