Need help on tires

[lalo84]

New member here and I'm also new to the truck scene.

I recently bought a 2015 Z71 and wanted to know the biggest tire I can go on stock 18" wheels and stock suspension?

I tried searching but couldn't find anything.

any help would be greatly appreciated.

[CamGTP]

How long did you search for?

That's like one of the most popular topics. Going to about a 33in tire is the biggest, then you'll start rubbing.