What is tractor track width and how is it adjusted?

Track width is the distance between the centres of the two tyres on an axle. Stability against rollover, working between crop rows without damage and traction all depend on it.

Why it matters

• Row crops: In beet, maize or sunflower the tyres must run between rows. If track width doesn't match row spacing, tyres crush plants.
• Stability: A wide track is steadier on slopes; a narrow track helps in vineyards, orchards and tight spaces.
• Front–rear match: Similar front and rear tracks let the rears follow the fronts' path, reducing compaction.

How to change it

• Reversing the rim: Many rims are offset; mounting them the other way widens or narrows the track.
• Rim–disc position: Some wheels let the rim be bolted to the centre disc in several positions, each giving a different track.
• Sliding hubs: Some tractors allow stepless adjustment by sliding the wheel along the axle shaft.
• Front axle: 2WD front axles often use telescopic arms; 4WD fronts are adjusted via the wheels.

The operator's manual lists the possible settings and the track each one gives.

Cautions

• Torque wheel nuts to the maker's value after adjusting and recheck after first use.
• The tread's V pattern must still point in the direction of travel; reversing rims may mean swapping tyres left to right.
• A very narrow track raises rollover risk on slopes.

See also narrow orchard tyres and the row-spacing tool on the home page.