The only problem is, they don't seem to make a 31x10.50-16.
This sheet will give you weights of the tires.
http://www.tirerack.com/tires/Spec....WLV2&tirePageLocQty=&partnum=385SR6ATAKORWLV2
Cool beans.
I know they don't make a 16" 31x50. I'm trying to see how much more weight it will add by going from the 31's to the 235's