Good question??? Power kit or tires. You can always go to ebay type in tire size and brand under search. But then again you want a power kit. You do have tires right now but not a power kit hey watch this video and hear the HMF on mind I would go with the power kit then get the tires later. <a href="http://www.youtube.com/watch?v=eyix07E8mek" target="_blank">http://www.youtube.com/watch?v=eyix07E8mek</a>