Above image via: http://www.solarviews.com/raw/apo/as17-147-22526.jpg
Below inage via: http://apolloanomalies.com/images/ALSJ/AS17-137-20979HR.jpg
They are still working on the next generaton of lunar rover tires: http://www.crunchgear.com/2009/08/06/goodyear-and-nasa-develop-the-next-gen-lunar-rover-tire-its-springy/