Enough Tire
Centerline has 5X4" bolt patern rims. I had Autodrags on my 69. 15X8.5" with a 4-7/8" backspacing and 275-60 M/T drag radial.
I think you will need less back spacing though if you dont have offset spring hangers.
I did have a 255-60 on the same rims before I moved the spring but they were real close to hitting.
Centerline has 5X4" bolt patern rims. I had Autodrags on my 69. 15X8.5" with a 4-7/8" backspacing and 275-60 M/T drag radial.
I think you will need less back spacing though if you dont have offset spring hangers.
I did have a 255-60 on the same rims before I moved the spring but they were real close to hitting.