Metric | English
420/90R30 (16.9R30) TL 147A8/147B Agribib
MSPN 68713 CAI 953332
Tire Technical Data
Unloaded Dimensions Loaded Dimensions Rims (rec. in bold)
Overall Width Overall Diameter Loaded Radius Rolling Circumference DW13
W13
W14L
DW14L
DW15L
DW14
17.4 in 60.4 in 27.2 in 179.4 in
RCI # of Lugs Tube MSPN Tube CAI
42 21 x 2 58930 170058
Gross Flat Plate Tire Weight 100% Tire Volume Centerline Tread Depth Minimum Dual / Triple Spacing
263.0 in² 240.3 lb 105.7 gal 55 /32nd" 21.7 in
Load & Inflation Data
Load Per Tire (Single)
30 mph 25 mph 20 mph 05 mph 25 Dual  Inflation Pressure
- - 2,830 lbs 3,970 lbs 2,360 lbs 6 psi
3,200 lbs 3,200 lbs 3,420 lbs 4,650 lbs 2,810 lbs 9 psi
3,750 lbs 3,750 lbs 3,970 lbs 5,320 lbs 3,300 lbs 11 psi
4,800 lbs 4,800 lbs 5,070 lbs 6,690 lbs 4,210 lbs 17 psi
5,840 lbs 5,840 lbs 6,170 lbs 8,050 lbs 5,140 lbs 23 psi
6,390 lbs 6,390 lbs 6,780 lbs 9,370 lbs 5,620 lbs 29 psi
6,590 lbs 6,590 lbs 7,080 lbs 9,650 lbs 5,800 lbs 32 psi
6,780 lbs 6,780 lbs 7,390 lbs 9,920 lbs 5,960 lbs 35 psi
- - - 10,050 lbs - 38 psi
- - - 10,200 lbs - 41 psi
General Notes Pertaining To Load and Inflation Data Above
  • Load Values given at 6 psi for 25 mph and 30 mph are for calculating dual and triple load values only.
  • All load values are for maximum indicated speeds at low torque.
  • 20 mph load values also apply for low-speed high-torque field work.
  • High-Speed Cyclic (HS Cyclic) load-pressure data applies to low-torque spreading or spraying at field operating speeds up to 20 mph. Additional bonus loads permitted for this type application assume a rapid decrease from full to empty, where max load at max speed (20 kph) does not occur more than 15% of any work day.
  • Cyclic load-pressure data applies to low-torque harvesting type applications at field operating speeds up to 6 mph. Additional bonus loads permitted for cyclic applications assume a gradual load increase with unloading in the field.
  • Load & Carry load-pressure data applies to low-torque transport operations at max speeds of 6 mph for a max distance of 650 yards before discharging load and returning empty.
  • All load-speed-pressure data is valid for ground slopes up to and including 20%. When operating on slopes greater than 20%, please contact Michelin.
  • For moldboard plowing with single drive tires in the furrow, a minimum inflation pressure of 10 psi is required.
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