You can find 15" 1 piece wheels for 6 lug GM pattern in lots of widths, 5 to 5 1/2" width should be about right for those tires.


BC
1960 Chevy C10 driver 261 T5 4.10 dana 44 power loc
1949 GMC 250 project in waiting
1960 C60 pasture art
Retired GM dealer tech. 1980 - 2022