It depens on how much lift is on it, but without a lift you should comfortably be able to fit 33x8 sized tires on them with little or no rubbing.
8/12 = 4/3b8/12 = 4 x b/33x8/12 = 4xb24/12 = 4b2 = 4b2/4 = 4b/4b = 2/4b = 1/2
http://www.biblebrowser.com/proverbs/8-35.htm The context is speaking of a lady called 'Wisdom'. She offers life if you listen to her. There are a number of ways that this can be taken. That is what is wonderful about the word of God. To give a little background Proverbs was written by King Solomon the wisest man that ever live according to the bible. He was addressing this to his son a young man just coming of age as an adult. These sayings were to guide and instruct the young man to go through life and not get in trouble. The life being offered first is this life we now have to be trouble free and full. Only Christ can offer eternal life. Wisdom can be seen as a type of Christ in that everything that he offers to us is for our good. In the Nag Hammadi, Sophia is the lowest æon, or anthropic expression of the emanation of the light of God. She is the syzygy of Jesus Christ (i.e. she forms a unity with Christ, being cojoined with him), and Gnostics believed that she was the Holy Spirit of the Trinity. Sophia is depicted as the creator of the material universe in On the Origin of the World. Furthermore, the planet Earth and everything on it was indeed created by the Jewish God Yahweh, but he is depicted as fundamentally corrupt. Because Sophia created the material universe and its god (also known as Yaldabaoth, Samael, and Demiurge) either without her syzygy Jesus Christ or, in another tradition, because she tried to breach the barrier between herself and the unknowable Bythos.