Brabham was affected by a cold, and qualified poorly before retiring when the BT19's gearbox failed.[25] 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 with his injuries.[26] The BT19, using Goodyear tyres that were not suited to the conditions,[27] came home fourth of five classified finishers.