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The only wheels i could find that were close enough to the size you need were 17x12 made by weld racing there is a couple different styles in that size.http://www.4wheelparts.com/PDT269570.aspx Andhttp://www.4wheelparts.com/wheels.aspx?w=1615-16

rim width will change the overall height of the tire, within reason, the overall width of the mounted tire will only change minimally and not effect tire performance. to wide a rim and the tire could break bead under hard offroading. just look for a narrower rim to mount tires on