Scored some rims, now tire question?

I have a 275 Hoosier on 8" Welds and it bulges out some, but the tire seems to sit flat, 11.8 wide, I think a 295, 50 ,15 is about max, for that rim 12.8 wide
becareful on your back spacing, I shreaded my first set of tires after my car was mini tubbed I had 3/4 to 1" of space on the inside and when the tire rolled up going over a speed bump it shreaded my tire like a can opener
out came the sledge hammer and 1/2" of wheel spacers