FORD 2011 F-550 v.3 - Manual (Page 219)

WARNING: An inflated tire and rim can be very dangerous if
improperly used, serviced or maintained. To reduce the risk of
serious injury, never attempt to re-inflate a tire which has been run flat
or seriously under-inflated without first removing the tire from the
wheel assembly for inspection. Do not attempt to add air to tires or
replace tires or wheels without first taking precautions to protect
persons and property.
WARNING: Stay out of the trajectory (1) as indicated in the
illustration.
Tires, Wheels and Loading
219
2011 F-250/350/450/550 (f23)
Owners Guide, 3rd Printing
USA (fus)