Farm machinery works on mud, stubble and stones, often at low pressure and with heavy loads. Many tractor rear tires, implement tires and older trailers are still tube-type, and the inner tube is what keeps them working through the season.
Where agricultural tubes are used
- Tractor drive and front tires on tube-type rims, including older and compact tractors.
- Implements: seeders, sprayers, balers, rakes, harrows.
- Farm trailers and wagons with spoked or older rims.
- Tires with ballast — some farmers fill tubes with water or antifreeze solution for extra weight.
Choosing the right tube
- Exact size match with the tire (for example 16.9-28 or 11.2-24).
- Valve type: tractor tubes often use TR218A air/water valves, which allow liquid ballast.
- Material: butyl for air retention; natural rubber where flexibility and heat resistance matter.
Maintenance
Check pressure often — tube-type tires run under-inflated tend to slip on the rim, which can shear the valve. Repair punctures quickly, and replace old, cracked tubes before the season rather than in the field.
Industry trends
New tractors increasingly use tubeless radial tires with lower pressures to reduce soil compaction. Demand for tubes stays steady thanks to the large fleet of older machines, implements and markets where tube-type tires are cheaper to buy and repair.
Related: industrial inner tubes, forklift inner tubes.