just because your car tracks straight and you think your tires arent wearing funny is NOT an excuse not to get an alignment.

at the very least, get your car on a rack and see where everything is at. if you're like "bah i dont need one" then so be it.

i have lifetime alignment deals on both of my cars and get an alignment every other oil change. my cars track straight as an arrow, have good tire wear but the toe specs always change within those 5k miles