Tire size? KO2s

[Steel Workin]

I have a 2007 Yukon XL with a 2inch leveling kit on the front. Stock rims. Not sure what size tire to go with. 285/65R20 or 275/60R20. Currently running 275/55R20. I will be getting BFG KO2's. Thanks

 

[Mpaxson]

275/60/20. 285/65/20 will be to big and will rub