TABLE F1
Radial Ply Agricultural Drive Wheel Tires Used on Agricultural Harvesting Equipment in Cyclic Loading Field Service and Road Transport (Excluding Hillside Combines)
 
TIRES USED AS SINGLES
TIRE
SIZE
DESIGNATION
BASIC
TIRE
LOAD
INDEX
NO.
INFLATION PRESSURE FIELD SERVICE
MAXIMUM CYCLIC LOAD
ROAD TRANSPORT
MAXIMUM LOAD
MAX. SPEED - 25 MPH
MAX. SPEED - 6MPH MAX. SPEED - 10MPH
psi
kPa
lbs.
kg
lbs.
kg
lbs.
  kg  
 000000000
16.9R2613530210815037007450338053602430
18.4R2614030210940042608550388064002900
18.4R3814124160965043808800400066003000
 1463021011200510010200464076003450
18.4R421483021011800536010800488080503650
20.8R381472416011600524010500476080503650
 1533021013700620012500566091004125
20.8R421553021014500660013300600096504375
30.5LR32170362502240010200205009300148006700
380/90R461494128012200554011100504078503550
420/80R461493524012200554011100504076003450
480/70R281515236012900586011800534082503750
650/75R3216741280204009250186008450128005800
 172523602360010700215009750148006700
600/65R281472920011600526010500476078503550
800/65R3216729200204009250186008450128005800
 172412802360010700215009750152006900
800/70R381732920024300110502215011000171007750
900/60R321764128026700121002430011000171007750
NOTES 1: For tires used in dual service, above tire load limits must be reduced. Multiply figures in the above table by .88.
2: The load ratings in the above table reflect a different operating duty cycle when compared to agricultural tractors. This cyclic service is intended for use on a vehicle with a minimal requirement for torque transmission and with appreciable total weight fluctuations; e.g., combine grain tanks that are repeatedly filled and emptied. Unloading is to occur before off-field transport.
3: For intermediate inflation pressures and for tires not shown, the field service loads in Tables A and C may be increased by 70% for 6 mph (10 km/h) applications and 55% for 10 mph (15 km/h) applications with a 6 psi (40 kPa) increase in inflation pressure. Consult tire manufacturer for loads for pressures not shown for transport service
4: Due to higher inflation pressures specified for these tires, the tire and wheel manufacturer must be consulted.
5: The above field service cyclic loads only apply to vehicles that operate up to an 11° slope (20% grade). For operations on slopes greater than 11° (20% grade) loads in Tables A and C shall be used.
6: For tires used on grain carts, the field service loads in Tables A and C may be increased by 55% for 15 mph, up to one mile, with a 6 psi increase in inflation pressure.


FOR RIM AND WHEEL LOAD INFORMATION, SEE IMPORTANT NOTES IN CHARTS I AND II IN GENERAL FARM TIRE INFORMATION