Correct size tires

[2000chevysilverado]

I am trying to figure out what is the largest tire i can put on my truck is, its a 2000 silverado 1500 , the truck will have. A rough country leveling kit with new keys and shocks as well as blocks. Currently i am running 2015 silverado wheels on it (18s) i am looking to get new tires in the future after the leveling kit along with 2" hub centric wheel spacers. I would love to run 33x18x12.5 but i am concerned about rubbing. I am not affraid to get in there and do some trimming as long as it is not a ton. The tires i will be getting are atturo trail blade mts, has anyone had any experiance with this or issues or reccomendations, thanks

[bgbdwlf2500]

my 2010 has the ready lift level kit on it. I'm running a 33 but its a stock width tire, no rubbing. typically the manufacturer will tell you the max height you can run

[2000chevysilverado]

Rough country says 32" is the max but i have also talked to people and had all sorts of different opinions, rough country says 32 is max without cutting so im thinking i could fit 33s with a little trimmig