2013 LTZ Tahoe no auto ride more aggressive tires. Help

[Billtahoe13]

Hi. I bet this question has been asked before. Sorry if this is redundant. I want to put BF Goodrich all terrian KOs on my truck. I don't want to deal with trimming the wheel wells. What is the minimum leveling fit I need (front and rear). Tire size would be LT285/55R20. They are 32.6 inches.

Thx

 

[Bigmac18]

Stock or aftermarket wheels? The offset will have a lot to do with the fit

 

[Billtahoe13]

Hi bigmac. They are 20" stock wheels.