Check with your local tire shops. With some shops alignment is free with any tire purchase. Others charge aprox $80 for a standard front end alignment.
Take it to an alignment shop
Before-a bad alignment cannot "unbalance" a wheel, but an unbalanced wheel, if bad enough, can throw off an alignment.
you should have a 4 wheel alignment done
Usually a 4-wheel alignment costs between $60 & $90
Anytime after an accident.
The wheel alignment specs should compensate for crown in the road. The settings should be 2.54/2.73 for the caster and +.21/-.04 for the camber. The toe should be 1/16".
You should have wheel alignment done on your vehicle annually or whenever your wheels feel to be out of alighment while you're driving. If it's something you can feel that your car is out of alignment it is important to have it looked at and corrected as soon as possible.
One should get wheel alignment after you start feeling some vibration.
My van has bad tires at front and better ones at rear, should wheel alignment be performed with bad tires?
When you have the front end aligned the mechanic should align the steering wheel also. This is so the steering wheel is positioned straight when you're driving straight down the road.
Mugs 'n' wheels
Four wheel is preferred.