215 85R 16s are the largest tires that will safely fit on stock rims.
If you go to a 7 inch wide rim you can run 235 85R 16s
That's as wide of a rim as you can safely run on a front end with stock tie rod ends.
The banjo shaped ends will buy you a bit more width.

I had the centers cut out of my stock rims and welded on to 7 inch zero offset outers and run tubeless Uniroyal 235 86R 16s

It's a bit larger than stock but looks and fits great, the truck rolls and steers very nicely.
I really agonized over the tire size and almost went with 215 85R 16s but the 235s fill up the wheel well better (to my eye).
Looks about the same as 7.50 x 16s but with a tad wider footprint.

Ray