dxbdude, as mentioned, amain is not the best for mini stuff.
Gerg got some alternative to the ride tires, I think they were either Cross or Spice tires...will have to ask him, but they seemed to be doing a pretty good job last time he had them out.
With mini's I would suggest buying low cost rims, as all the tires need to be glued on and you will eventually throw them away.. I normally buy the el cheapo rims from rcmart, US$5 for 8 rims and the RIDE tires..
For HPI stuff it might be worthwhile looking for the local suppliers, seems like some of the hobby shops are getting quite a bit of HPI stock in...