Taking a wheel from somebody that doesn't want to give it up will require some aggression. If you can do with style all is good. If you can only do it by being a jerk, then you are that guy.

added in edit: If you want a wheel you need to first get into position to take that wheel. This will probably require expending more energy than they guy sucking the wheel you crave. Next you need to be attentive. If the guy you want to replace leaves even the smallest gap, you need to move in. Being further up the road gives you huge advantages.