The stock EXT2 wheels are OK, just kind of ugly IMO. The original EXT's aren't so great. I got a set of blue ones and they cracked after just a couple of runs on dirt. See EXT2Rob's video (above) of the track I run on. They also dissolve in acetone if you use that method to take off the tires!
ORIGINAL: 0RESET0
The stock wheels on my EXT are plain white disks. The EXT2 wheels I got are black with spokes. I mainly use my truck for bashing so it spends some time on asphalt and pavement as well as gravel and dirt. I may get some stickier tires if I ever find a track or make my own but I think I will stick with a longer wearing tire for bashing. I just don't want the wheels going to pieces on me. I figured if they used them on the BL EXT2 then they should be ok.