Three measurements, one shortlist
Selecting a vineyard tractor starts with three numbers: the narrowest clear row width, headland depth available for turning, and slope of the main working rows.
With those three numbers, the model list typically narrows to one chassis width and one implement width. Without them, discussions tend to focus on horsepower, which doesn't determine whether the machine fits.
Width is a range, not a single value
Rows are rarely uniform. Posts, irrigation fittings, and uneven pruning can reduce the clear width at specific points; therefore, record the narrowest section rather than an average.
The same applies to height. Low cordons and trellis wires restrict the machine's maximum height and canopy coverage, particularly when the tractor is equipped with a sprayer featuring an elevated tank.
Width follows chassis
Once the chassis width is fixed, select an implement working width that stays within the row. A mower or sprayer wider than the clear row will damage vines or equipment, even if the tractor fits.
For dealers offering a full package, the quote must list both widths together. Use this step to confirm whether the customer's existing implements can be reused.
Headland and slope
Headland depth determines the turning method. A short headland may require a narrower machine or different implement mounting, and the driver needs sufficient space to complete the turn without reversing into the row.
Slope impacts both stability and tire selection. When rows span across a slope, track width and ballast must be defined in the specification, not treated as an afterthought.