You could, but it would be more accurate with new tires.
Your alignment could be off. Meaning your tires are either facing out a bit, or facing in a bit. This can cause your tires to go bad. Your local garage should be able to do a alignment on your vehicle to straighten things up.
My van has bad tires at front and better ones at rear, should wheel alignment be performed with bad tires?
Not necessarily. If the car was in alignment prior to getting the new tires, it will be in alignment after the new tires. It isn't a bad idea to check the alignment periodically and it is probably better to check it more frequently than when you get new tires.
No. If there had previously not been any alignment issues, and as long as the new tires are properly balanced, you will not need an alignment.
When you change the alignment on your car, you are making sure that all of the tires are in a straight line. You can tell when an alignment is necessary because the tires will wear unevenly and your vehicle may drift.
Before-a bad alignment cannot "unbalance" a wheel, but an unbalanced wheel, if bad enough, can throw off an alignment.
Out of alignment or bad shocks or struts
Bad tires and bad alignment can cause the car to shake at certain speeds.
you do not have to align your vehicle to balance the tires BUT a balanced tire will still wear if the alignment is not correct
Take the vehicle yourself to an alignment shop and let them do it.
One of your tires is bad, or you need an alignment. or you are a woman
Agressive tread, bad alignment