Asking for a friend ..... I seem to remember that the M48 used aluminium or steel road wheels. What did the Sgt York knock ups use.

M247 used steel wheels.
The M48 started off with steel wheels, the aluminium wheels came with the M60.
I don't know if some later variants of the M48 got the aluminium wheels.
The IDF swapped out the aluminium wheels on their M60's and gave them steel wheels instead since the steel wheels lasted longer in their terrain


M247 with steel wheels
Full size image: https://upload.wikimedia.org/wikipedia/commons/6/6d/M247-sergeant-york-tn1.jpg

The aluminium wheels have reinforement ribs in the corners

M60 at the First Division Museum
https://www.fdmuseum.org/exhibit/m60-patton-tank/
Full size image: https://www.fdmuseum.org/wp-content/uploads/2016/12/M60-PATTON-TANK.jpg

/ Robin