Selecting Agricultural Tyres for Field Demands
Agricultural tyres must balance tractive power in loose field soil with durability during road transport.
Important selection parameters include:
- Rear tyre sizing: Common configurations such as 12.4-28, 13.6-28, 14.9-28, and 16.9-28 must match tractor transmission gear ratios.
- Front steer tyres: Multi-rib or three-rib designs (6.00-16 and 7.50-16) provide directional stability during ploughing and haulage.
- Ply rating: Choosing 8 PR to 12 PR ratings provides carcass durability against punctures from sharp stubble and stones.
Traction Optimization and Soil Preservation
Proper tyre selection protects the productive topsoil structure while maximizing drawbar pull.
Key considerations for field operations:
- Lug design: Curved, self-cleaning lugs prevent mud packing in sticky wetland conditions and wet paddy fields.
- Radial vs bias: Radial farm tyres provide a wider ground footprint, reducing soil compaction and saving fuel compared to bias tyres.
- Ballasting: Adding recommended cast iron wheel weights or liquid ballast in rear tyres improves traction during deep subsoiling.
Routine Tyre Maintenance Guidelines
Regular care extends tyre operating life and safeguards tractor drivetrain components.
Recommended maintenance routines:
- Pressure management: Maintain lower inflation pressures for field work and increase to recommended highway pressures for heavy trolley haulage.
- Visual checks: Periodically examine sidewalls for cuts, foreign objects, and signs of uneven wear caused by improper steering alignment.
- Storage care: Park idle tractors on raised wooden blocks during extended off-seasons to prevent flat spotting and sidewall fatigue.
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Common questions
What rear tyre size is standard for 45 HP tractors?
Tractors in the 45 HP range typically use 13.6-28 or 14.9-28 rear tyres matched with 6.00-16 front tyres.
Why is correct tyre pressure critical in agricultural tractors?
Incorrect tyre pressure leads to excessive wheel slippage, increased fuel consumption, rapid tread wear, and severe soil compaction.
What are the benefits of radial tractor tyres over bias tyres?
Radial tyres create a larger contact patch, distribute tractor weight evenly to minimize soil compaction, and enhance fuel efficiency.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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