Wheel/Tire question

New to the Tundra Gen 2.5 after just switching from a Tacoma. I picked up a 2017 Tundra SR5 that came with a 3” RC lift. It also came with
New 20x10 TIS off-road wheels and new 33x12.50x20
Toyos AT’s. The tires rub the inner fender (plastic and metal frame) at full turn. I absolutely do NOT like the wheel and tire combo, but I figured I could just swap it out to a 17” or 18” narrower wheel and tire.

After some quick use of the search function, the 17 or 18 should be an easy switch with the correct backspace. Reading the “new” member sticky for wheels/tires it looks like an 17x9 or 18x9 works with 0 or -12mm offset. It also looks like the ones I have should not rub but they do. Any advice on what exact size tire/wheel would guarantee no rubbing on turning? I hate 10” wide wheels, so I would prefer an 8” wide rim to air down. If there is a specific search/thread please let me know and I will comb through it more.

I have attached a picture for reference. Thank you for the advice or thread suggestions to read up on!!