I have a HPI RS4-3 and I am in the market for new tires. Currently I am running foams and I don't like the idea of how quickly they get worn out. I was thinking of switching to rubber tires. Should I go with slicks or a tire like the HPI X pattern? Also should I get belted or non-belted? And what compound of tire should I get? I run mostly on concrete tracks such as parking lots. Any help would be aprreciated.