I am buying a 2008 Crewcab 4wd z71 with a leveling kit that has low profile tires on it now and I want to put all terrain tires on it and I am looking at toyo open country or nitto grappler. which size tire would be the best trying to decide on 18 or 20 I am not a tire guru so I really do not know what size would be best no lift kit

 

these are 33's. and theyre not even "that" big for off road tires. you might want to go a little bigger. i have a 4 inch body lift. and a 2 inch suspension lift.

 

just to give you a refference. and theyre BF Goodrich Mud Terrains T/A

 

I am an asst. manager of a tire shop here in southern ca. 20'' wheels would look great on there with a leveling kit. With a 20 your tire choices are more limited than if you went with an 18 but with an 18, the tire width would suffer a bit. The BFG all terrain is probably the most common tire and is the tire that everyone runs to. I've had them on 2 of my trucks and they last forever but they are expensive as well. There are all kinds of tires out there nowadays that will give you a similar look as the BFG and will help you save a little in the pocket. The size I have on my crew cab is 275-55-20. I like the width and the way it makes the truck sit much better than the 17s I could have gotten. Let me know what you think!

 

put a 33x12.50x20 under it...will look awesome. my truck has that under it with just a levelin kit and so does my dads nnbs 07 vmax