https://www.wheel-size.com/size/jeep/wrangler/2018/#trim-36i-usdm-285
The link above gives you information on the OEM wheels and has a calculator for what wheel and tire will fit depending on clearance. I have seen several posts asking if a wheel and tire combo will fit a stock jeep so give...
I replaced my plastic bumper with the Rugged Ridge Spartacus, used a Rusty's winch plate because the Rugged Ridge would not be available until October. I installed a Smittybuilt X2O 10,000 with this package also. I had to make some modification because of fog light brackets and hid the winch...