Williams GG-1 Traction Tire Replacements

[PvtDoughnutt]

Part #344-X004R2, not sure what the exact dimensions are, if someone knows kindly throw it out there.
I know that Bachmann doesn't have any for sale at the moment, besides buying a whole new truck assembly.
But does anyone know of any for sale or a similar sized part cross referenced from an MTH, Lionel, etc.?
Or any links with a good replacement band, anything is greatly appreciated.
Thanks,
Greg