As the season progressed the team experimented with fitting aerofoil 'wings' to the car. At the Italian Grand Prix and the United States Grand Prix for example, Stewart raced the MS10 with a high suspension-mounted wing, the same kind that was outlawed the following season after both Lotus drivers suffered near-fatal accidents at the Spanish Grand Prix. At the 1969 South African Grand Prix the car was even raced with two high wings, one over the front and one over the rear suspension. At other races the MS10 was raced with a lower wing, such as during Stewart's dominant win at the German Grand Prix.