Ok guys, just purchased a set of hpi dirt claws and a set of hpi warlock wheels, white and dyed them sunshine orange. The dirt claws are very soft and set up almost like a cut tire with a thick foam in them. The foams have a squared edge but I rounded the edges with a pair of scissors to make my savage corner better. they have to be the easiest tires to glue up that I have ever done. I took the proline mulchers off and mounted these bad boys up. I got to run them for about five minutes today in between rain storms. for the five minutes that I ran at the track they handled awesome. In the curves they slid around effortlessly. and on the straights plenty of bite with great acceleration due to the cut tread. totally impressive. I think they are great in the dirt but have not had a chance to try them in the grass. I will update as soon as I do.