31s vs 33s?

[OverlandG-wagon]

31s vs 33s?

 

[Canadaexplorer]

We need some more info such as type of driving etc. But I do like bigger tires so I will say 33s

 

[Southexplorer]

I would agree that we need some more info. 33s aren't that big though so the negatives aren't too obvious