Rear tractor tire selection must be based on a number of considerations including: 1. Field service requirements. 2. Tire dimensions. 3. Load carrying capacity. 4. Torque requirements. 5. Use of proper rim.An in depth study of these features is followed by a discussion of the requirements for proper care and servicing of rear tractor tires stressing the importance of: 1. Maintenance of specified load/inflation relationship. 2. Not overdeflecting tires. 3. Not subjecting tire to excessive torque which may result in: a. Sidewall buckling. b. Rim slippage.Changes in farming equipment and techniques have affected tire requirements and performance parameters. Proper selection, care, and servicing is required to provide satisfactory rear tractor tire life and performance on modern equipment.