[Sammus]

You have to balance tyres... just like a real car :P

My HPI sand paddles didnt need it though, smooth as, straight off the bat.

I've notice that nearly with nearly all tyres, the actual tyre is badly balanced, ie the rubber is thicker on one side than the other. I balance the tyre first by sticking bits of tape around the inside wall behind the tread - this way you dont need as much weight to balance, because its much further from the centre. My 2.2 dirt hawgs on rpm slingshots eg I'd glued without doing this and I cant get enough weight (using lead tape) on the inside of the rim to balance it before the weights start to rubb on the C-hub... bah, unbalanced it will stay...