Steyr Plus 30-50 / 430-760

The Steyr tractor series was thoroughly redesigned during the years 1966-68. The model range, named the Plus series, was ahead of its time not only in terms of appearance but also in many technical details. The three smallest models were initially numbered according to their power ratings as 30, 40, and 50. In 1969, the marketing team decided that three-digit model numbers were better, and the numbers became 430, 540, and 650.

The Plus series engines were Steyr’s own water-cooled direct injection diesels. The smallest model had a 2-cylinder engine, the next had 3 cylinders, and the 50-horsepower model was 4-cylinder. A 25% increase in torque was promised. The transmission was equipped with a directional reverser. There were 8 forward gears, and the two highest gears were not available in reverse. An overdrive was available as an optional accessory.

The four-wheel drive could be engaged on the move, and hydraulic brakes were available as an option on the front axle. Due to a 39-degree steering angle, the turning circles of the four-wheel drive models were, like their contemporaries, large. Of the smaller models, only the 50 had a dual clutch.

In 1971, the 760 was introduced above the 650, with differences mainly limited to a more powerful engine and larger tires. The following year, a 5 hp more powerful 545 was added alongside the 540. Besides the increased power, it also had a higher lifting capacity.

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