97 tj 4 litre,has 31"tires that need replacing.i live in the country and am wondering what will give the best feul millage 31" or 32" tires.i am sure 32 would be better on the highway, but for average driving would i be better to stick with 31.
thanks claude

 

i believe 31's would be a lot better overall!

 

thanks thats what i was thinking
claude