Attached Link: http://www.morphography.uk.vu/uvtiling.html

You mean you want to repeat a small section of the tread around the circumference of the tyre? I know how to do that equally in both U and V, but repeating in one direction only can't be done directly in UVMapper. I think. If you use Poser 5 or 6, you can set U and V tiling in the material room.