Metric | English
620/75R30 (23.1R30) TL 168A8/168B MegaXbib
MSPN 63928 CAI 753673
Tire Technical Data
Unloaded Dimensions Loaded Dimensions Rims (rec. in bold)
Overall Width Overall Diameter Loaded Radius Rolling Circumference DW20A
DW18L
23.8 in 67.3 in 30.3 in 200.1 in
RCI # of Lugs Tube MSPN Tube CAI
44 20 x 2 80662 101448
Gross Flat Plate Tire Weight 100% Tire Volume Centerline Tread Depth Minimum Dual / Triple Spacing
421.6 in² 463.0 lb 196.8 gal 58 /32nd" 31.5 in
Load & Inflation Data
Load Per Tire (Single)
25 mph 20 mph 15 mph 05 mph 6 Cyc  Inflation Pressure
6,680 lbs 7,140 lbs 7,410 lbs 9,110 lbs 10,270 lbs 14 psi
7,290 lbs 7,790 lbs 8,080 lbs 9,870 lbs 10,900 lbs 17 psi
8,490 lbs 9,080 lbs 9,410 lbs 11,400 lbs 12,170 lbs 23 psi
9,460 lbs 10,120 lbs 10,480 lbs 12,690 lbs 13,770 lbs 29 psi
10,420 lbs 11,150 lbs 11,550 lbs 13,990 lbs 15,380 lbs 35 psi
11,380 lbs 12,170 lbs 12,620 lbs 15,280 lbs 16,980 lbs 41 psi
12,350 lbs 13,210 lbs 13,690 lbs 16,580 lbs 18,590 lbs 46 psi
- - - 17,230 lbs 19,390 lbs 49 psi
- - - 17,870 lbs 20,190 lbs 52 psi
- - - 18,520 lbs 20,990 lbs 55 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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