Where is the paint dot on the sidewall in relation to the valve ? Most people including most tyre fitters, dont realise that this corresponds to the heavy spot on the tyre. This should be placed opposite the valve as a starting point, as the 2 help to cancel each other out, and normally means you need less weight to balance the over all assembly. It be tempted to break the beads, reseat the tyre with plenty of soap, paying attention to where this mark is, then rebalance as Scott has said with 30-35psi in the tyres. HTH Dom