Do you think the drag is from wheel bearings or brake pads? Jon may be correct with the bearing being improperly preloaded but its' also possible the brake calipers have a little residual pressure and/or something on the pads that is causing slight drag. Try pulling the pads out and spinning the wheels to see if the problem still exists. Yours is a later car with a booster and I don't know if they have a 2psi residual pressure valve or not (it's common on lots of more modern cars) to combat 'pad knock back' to keep the pedal travel short. If your car has one, it may be malfunctioning.