My 1990 E350 has 235 85 R 16 size tires.
6890
E4od
31by 10.5
Your tire dealer can help you with that.
You can lower it with the help of a mechanic. You can take it out and then place it onto the empty part.
P245/65r17 105s
1991 e 350 diesel 7.3 has 190 hp
P185/75R14
225-60.16
To remove the front tire from a Ford E350, first, ensure the vehicle is parked on a flat surface and secure it with wheel chocks. Loosen the lug nuts slightly while the tire is still on the ground, then raise the vehicle using a jack and secure it with jack stands. Finally, fully remove the lug nuts and take off the tire. Always refer to the vehicle’s manual for specific instructions and safety precautions.
Just use the suggested R15
To reset the low tire pressure light on a 2011 Ford E350, first ensure that all tires are inflated to the recommended pressure. Then, turn the ignition to the "On" position without starting the engine. Press the brake pedal and hold the reset button on the dashboard until the tire pressure light blinks three times. Finally, turn off the ignition, and the light should reset.