It's a good idea, espessially if the old tires have worn unevenly, and while they do it, they'll see if anything in the steering/ suspension is worn.Its good peace of mind knowing your new tires are not going to scrub out on the edges.
The camber might need to be changed on a car for the tires to wear evenly. A car that is out of alignment will be very hard on the tires.
no unless you have parts that need replacement
If your car's tires are out of balance it will usually cause a vibration or thumping. If your wheel alignment is out it will usually cause the car to pull to one side.
Your neighbor probably noticed the tread of the tires. If a car needs an alignment, the ware on the tires will be uneven. You will see a worn down strip either on the outer edge or the inner edge of the tire.
At least every 30,000 miles. If you let go of the wheel and your car veeres right or left. If you drive and your car and your steering wheel shakes, its not an alignment you need, you need your tires balanced
new tires does not mean you don't need alignment. it is always a good idea to have the vehicle aligned after new tires are purchased to avoid premature wear, even if the car shows no sign of mis-alignment.
A alignment is needed if its pulling to one side. Where as a balance is needed if the car is viberating.
The car is out of alignment.
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.
it either the alignment of the car or the tires need to be rotated very soon.
The tires may need alignment if it pulls to one side and or the wheels may need to be balanced
The tires have nothing to do with alignment. The car could be aligned with the scalloped tires. They are scalloped from bad alignment, shocks, struts or damaged to the front end. An alignment in itself may not fix the problem. There may need to be some new parts installed before the alignment. You only need to replace the two scalloped tires. A four wheel alignment can be done with new ones on the front and old ones on the back. Rotating them at some point will not affect the alignment.