Tire size for 03 5 lugger

My truck has 205 65 15 on stock wheels. I would like to keep the stock wheels but perhaps a slightly larger tire. The other recomended size is 235. what about somthing a little bigger that that. would that be 30 x 9.5??
I want a moderate all terrain tire goodyear wranglers etc.
thanks

can 235 75r r15 fit on factory wheels

 

I think a 235 would fit but really the tire manufactures usually say what rims their tires should be mounted on...example our 235's should be mounted on 6.5-7.5" rims... but I dont see a problem with a 235.. a 30x9.50 may be pushing it for width... but a local tire shop might let you mount one on the rim and see how it looks before purchasing