Derf00

If your tire wear is normal and just the steering wheel is off center, and you haven't hit any pot holes or removed the steeringwheel for any reason, you can recenter the wheel yourself.

To do it, you'll need to loosen the Outer tie rod locking nuts on both sides so you can turn the inner tie rods for adjustment. It's easy and won't affect your alignment unless your total toe is off. That would only happen if you messed with the steering wheel previously or hit a pothole that caused the issue.

Since your steering wheel is slightly to the right > Both of your tie rods will need to be adjusted to the left <. To do that, the inner tie rods will need to turn a certain way. To push drivers side tire to the left, the inner tie rod will need to spin away from the front of the car (counter-clockwise). The Passenger side inner tie rod will also need to spin away from the front of the car (clockwise). This will pull the toe of the passenger side towards the left. If you turn both inner rods 1/8 or 1/4 turn each (Depending on how far off center it is), you should be able to get a centered steering wheel.

Here's a tutorial: As long as you make equal turns in the correct direction, you will not affect your steering. Worst case scenario, if you screw it up, you'll take it in for alignment which you wouldve done anyways without at least trying.
https://www.corvetteforum.com/forums...mine-pics.html

I've done this before on my Mustang and our Escape without issue.

As for the why, it could just be natural aging of the suspension bushings. Over time the bushings wear out and will change the suspension geometry slightly. A simple change on one side can cause the suspension to pull or lean towards one side or in this case bring the steering wheel off center.