Cylinder misfire. Possibly failed or failing engine mounts.
Check the idle, crankshaft and camshaft sensors.
What causes a car to idle good and run rough when you give it gas?
miss alignment of tires
what does idle funny mean? Does the whole car shake? (upper engine mount collapsed) Or does the engine shake/misfire? (Intake manifold gasket)
have you tried to get your wheel realigned
Can be many things. If the car is over 10 years old suspect a vacuum leak.
Yes they can. It can also be a vacuum leak, or defective idle control valve.
Check your motor mounts.
Engine miss or rough idle, or broken motor mount
That is about your average idle RPM. It depends on what car you have and the age of your car. If it bothers you, i'd recommend going to a place that fixes cars.
Timing belt. misfiring engine
might have misaligned or loose wheels