Did Tesla do the alignment at the SC or farm it out? I have mentioned the wobbliness in another thread, and it was suggested that I find an alignment shop that caters to high end cars and have it checked out. My car doesn't pull at all, and the wheel is perfectly centered, but others have said it still could be an alignment issue.
A car can track straight, have the steering wheel centered and still have very poor alignment. Unfortunately, many shops that do alignment don't really know anything about alignment other than to read the machine (which may not be calibrated properly). If the shop asks "which way does it pull", run--don't walk--away. There are five alignment angles:
1. Toe. The inward or outward angle of the tire when looking down on the car. This is generally considered the most important angle because tire wear, range, and pulling to one side can all be caused by poor toe. DIY: Check for feathering by running the palm of your hand across the tread (both inwards and outwards) and feeling if both ways feel the same or if one way is smooth and the other rough.
2. Camber. The inward or outward angle of the tire when looking from the front or rear of the car. This is generally considered a non-wearing angle but incorrect camber will accentuate problems with the other angles. It can also cause instability in cross winds if it's uneven from side to side.
3. SAI (aka KPI). Steering axis inclination. The inward or outward angle of the ball joints when looking from the front or rear of the car. This angle provides low speed stability. Generally not adjustable. Damage or wear on the bushings can cause this angle to be incorrect.
4. Caster. The forward or backward tilt of the ball joints when looking from the side of the car. This angle provides stability at high speeds. Too much and there can be vibration, too little and the car won't track well. The faster you travel the more this angle takes affect.
5. Toe out on turns. The additional amount that the inner wheel turns as compared to the outer wheel. This angle reduces wear when turning. It is adjusted by changing the length of the steering arms.
Other terms you may hear:
Included angle: The sum of the camber and SAI.
Thrust angle: How straight the back axle is relative to the front axle.
FWIW, I took my 2004 Prius in at 600 miles because it was wandering in high crosswinds. The camber was out and correcting it fixed the stability (at least in cross winds up to 50 mph--never drove under higher conditions). I don't understand why alignment isn't part of the pre-delivery service as alignment often gets out of adjustment during transport, but it's not.
