What width tire for a pony wheel

[Blownsob]

I am buying some 16x8 or 16x7.5 pony wheels to mount some slicks on. I know that I am limited to a 28" tall tire but what width do I need to use?

 

[NOMANIAC3]

i have hoosier qtp 28x11.50 16 on 16x7.5 pony wheels