Your wheels are literally where the rubber meets the road and it is important that all four of them share their responsibility equally. This starts with their alignment. If your wheels are not straight then it leads to uneven wear and tear on your tires. This can cause you to replace your tires more often than necessary. When you find yourself replacing tires sooner than you should be then it is time to have your wheel alignment checked.
More so than just unevenly wearing your tires, wheels out of alignment can impact your whole wheel assembly because of excessive vibrations that cause parts to become loose or fail prematurely. Whenever you experience excessive vibrations at higher speeds it important to make an appointment and have your wheel alignment checked because they are correctly aligned then something else could be the culprit.