Do you make any turns at speed on pavement? Most newer mowers with a tight turning radius, will have the front wheels toe in with positive camber to help them turn in tighter. If you turn on cement at all, it will wear the tires, especially the outside really quickly. As for adjustment, I know that on my Cub Cadet, you can adjust the "ball joints" as they are called on my mower, to adjust the toe, but the camber is fixed. Hope this helps.
