30x3-1/2, right front, steel felloe wheel, '22 Runabout.
I push the T forward, I hear a dull thud.
After a complete revolution, I hear a dull thud.
The dull thud repeats at every full revolution.
Right front wheel only.
The dull thud sounds like the gentle tapping of the butt end of a screwdriver onto a wood table top.
What might be the cause of the dull thud?
Spoke or wheel bearing.
I suspect that even if the car is headed west, north, or east, that's the sound of a bearing going south.
Flat spot on the tire. Scott
Try tightening the lug nuts before tearing anything apart.
First thing: push and pull the top of the wheel right and left. Check for loose spokes, loose wheel bearings or loose spindle bolts. If these are OK, jack up the wheel and spin it. Feel and listen to the front wheel bearing. It should spin easily without making a noise, but not be loose enough to wobble. Let go of the wheel and let gravity stop it. If it always stops at the same place, it is out of balance. While it is up check the surface of the tire for separation or bubbles.
If you don't find it by doing these things it is probably not in the wheel.