305 55 20 tires

Are these the biggest you’d go on this truck? Actually just purchased it this way today, but was thinking I could fit some bigger tires if I wanted to. Thoughts?

 

Unlikely with the current lift and offset of the wheels. Especially if the cab mounts aren't cut.
I had that size on my truck with a level and 0 offset wheels. I did go to 295/60r20 that is a tad taller and touch narrower. I had to shim the bumper out but only rub in reverse at full lock

 

@Jonross227 do you have any pics with your 0 offset wheels and 295/60r20's? I have 0 offset 20" wheels on the way and am leaning towards the 295/60's. Thanks!