2015 Silverado DBL Cab Tire advice.

[musicianking1]

Hey gents,

 

New to the site, so go easy on me XD

 

Leveled my truck yesterday. Leveled the front only 2.5IN with zero problems.

My next project is going to get new rims/tires, or just tires for my truck.

They are running stock 20's with eco(Continentals) tires right now.

 

QUESTION: What is the biggest size, i can run. I feel like its 33IN. Yet, i am confused as to the other things such as offsets (+-) and stuff. I think a 20x9 5.5in 33 maybe will fit, but i seek advice from the expert Peoples! (Yes 4wd)

 

Also i guess my camera is to good, cant post the pictures but i can find a stock image.

 

This stock image is my truck exactly, i leveled the front like i said ( Keep this in mind when viewing photo).