B-36 next to a B-29 
B-36 main wheel 
B-36 next to a B-29 B-36 main wheel The B-29 looks like a baby nuzzling up to nurse from its Momma.
Great footage in that movie of the flyover of the ballpark...
That B-36 main wheel was only on the initial aircraft. It turned out to be too big and exerted too much pressure on the tarmac and runway. It was quickly replaced with a four wheel bogie.