Technical 16 inch rims 4” wide

I have 16 inch rims 4 inch wide
Would like to install the narrowest radials I can

 

By all means, proceed

 

Coker sells radials that look like bias, they'll fit those wheels. Kinda pricey though. Beyond that I'm not sure. I've been thinking about trying to find something different myself for the A truck I bought.

 

While it is possible to "pinch" a radial tire, and 4x4 guys do it, it is not all that good of an idea, as it can force crown into the tread.

That will do weird things in terms of wear, and overall life.

Your choices will be quite limited, likely to 5.50, 6.00, and 6.50-16.

Coker and Diamondback have options.

 

I run 5.50 on my 4” wheels, no problems.