Determining Maximum Ballast

IMPORTANT: Do not overload tires. If maximum weight shown in chart is not enough for safety, reduce load or install tires with more load capacity.

NOTE: For tractors with dual or triple tires, maximum ballast is not normally limited by tire carrying capacity.

Use appropriate ballast for a particular operating condition. Tractors should have only enough ballast to maintain safe steering control.

Adjust ballast as tractor use changes. For example, adjust ballast when changing from mounted to towed implements.

IMPORTANT: To extend drive train life and avoid excessive soil compaction and rolling resistance, avoid adding too much ballast. Never add ballast that

results in continuous full-power loads below 6.6 km/h (4.1 mph).

Remove ballast if tractor engine labors when pulling heavy loads below 6.6 km/h (4.1 mph).

MAXIMUM LOAD PER WHEEL
 
Tire Size Load Rating 40 km/h (25 mph)
710/70R38 166A8** 5300 kg (11700 lb)
800/70R38 173A8 6500 kg (14300 lb)
710/70R42 168A8 5590 kg (12320 lb)
20.8-42 10 Ply 3350 kg (7400 lb)
20.8R42 155A8** 3875 kg (8550 lb)
520/85R42 157A8 4125 kg (9100 lb)
620/70R42 160A8** 4500 kg (9910 lb)
620/70R46 162A8 4750 kg (10500 lb)
710/70R38 166A8 5300 kg (11700 lb)
18.4R46 155A8*** 3875 kg (8550 lb)
480/80R46 158A8 4250 kg (9350 lb)
520/85R46 158A8 4250 kg (9350 lb)
480/80R50 159A8 4375 kg (9650 lb)
900/50R42 168A8 5600 kg (12300 lb)

 

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