Tires and spare options

I purchased a set of 275/65R18 AT cooper tires for my limited nightshade, I know it's not the most popular size around here but I like the stock nightshade wheels i have and from my understanding they are one of the biggest tires you can fit on 18's with a modest lift and no trimming. Does anyone know if I buy another one for my spare will it fit under the truck without modifying anything? I believe the 275/65r18 is an approx 32" tire. I haven't bought the lift/level yet but only want to lift it slightly more than needed to fit these tires, I'm leaning towards Bilstein 6112's in front and 5100 in the rear, any ideas on lift height I should shoot for? Any insight is appreciated, I kinda bought the cart b4 the horse on this deal but couldn't resist a good black friday deal on tires.

 

It'll fit in the spare spot. Some people say they fit 33s there. You can always deflate the spare a little or beat the brackets outward for more clearance too.

 

Similar outer diameter, different gen, but the same frame — I have 285/70r17 under mine just fine. I don’t think any larger diameter would fit however.

 

I keep my 33.1"D spare underneath the bed in stock location and it fits in place up to the top with some hammer blows to the 2 centering prongs.

It is a 255 width tire unlike my 4 others, so it tucks up high out of the way.