Questions about my new truck

Hey guys,
I recently bought a 2015 Tundra and I have some questions. The truck came leveled with a 3/1 level, 20x9 lrg 105 Access wheels, and 305/55R20 Ridge Grapplers. The tires poke about 1.5" and at first I assumed it was negative offset but after further inspection my wheels are at a +25. Last night my back wheel cap flew off and when I got home I saw the lugs not very far on the studs. I'm guessing wheel spacers were used.

My question is I'd like to go with an 18x9 wheel and keep the stance with no rubbing issues. I have a 3/1 level and mud flaps removed. I know this has been answered to death and honestly I've read hundreds of posts talking about wheel fitment, so much so that I'm even more confused about what works and what doesn't. I'm in BFE Kansas and local shops are non existent so I'll be ordering online and want to get it right the first time. 285/70R18 good? 295/75R18? Which offset? Thank you for your patience answering this! Having wheel spacers is really screwing up what I thought I knew.

 

Bump....with some clarification. What I'd like is a conversion of sorts. I want the stance I currently have with a 20x9 +25 with 1" spacers but in a 18x9 wheel with no spacers, if that's even possible.

 

Plug some numbers in here until you get the stance you want. Then start looking for wheels to match based on those numbers.

 

I have 285/70/18 Ridge Grapplers on mine with a +1 offset. I have BW flares and my tires are flush with the outside of the flare. I'm on a Toytec 3/2 lift. I do not see wheel spacers in that picture.

 

295/70R18 with wheels +18 offset and ET lug nuts.
those lugs look dangerous imo. how many turns you got ?

 

Not many! I went to pull the wheel off and my jack puked all its oil so I haven't gotten a closer look.

 

Thank you!!!