You got the tires replaced. And the problem has not changed a whit?
Unless you went to "BillyBob's we be tires an stuff" I would expect that they have modern balancing equipment that would be able to detect a bent rim.
Most likely not a rotational issue, though there is the possibility.
I would check for worn suspension/steering components. And if that turns out to be the problem, then I would suggest that a complete front end overhaul is in order.
Last edited by bigbill; 02/22/2008 4:36 PM.