Check out 28×10-12 ATV tires from brands such as ITP, Maxxis, Kenda, GBC, Super Swamper, AMS, Carlisle, Pit Bull, CST, Duro and EFX. If you need information specifically on mud tires you can see those tires here, ATV Mud Tires.
[ebayfeedsforwordpress feed=”http://rest.ebay.com/epn/v1/find/item.rss?keyword=28×10-12+-%28used%2Ctube%2Cchains%2Csand%2Cdune%29&categoryId1=43983&sortOrder=PricePlusShippingLowest&programid=1&campaignid=5337755085&toolid=10039&listingType1=All&lgeo=1&feedType=rss” items=”40″]