If you are the budget minded type you can set the toe and centre the steering wheel accurately yourself.

You need to get the car in a position where the wheels are on the ground, the weight is on the wheels and you have some access to the tie rod adjustments. Preferably have the wheels on a piece of plywood setting on gravel. You want to make sure that the wheels can move around as needed. Rubber on pavement doesn't work too well. The best possible idea would be 2 steel plates with some ball bearings between them.

The first thing to do is to set the wheel to the position it is in when you are driving straight. Bounce the car a few times to make sure everything is as it is when driving. Pick a consistent tread groove. Using the chosen tread groove and an assistant, measure the distance from one tire to the other in from of the axle and behind. make sure to use the same position on the tire. Ideally you want the front and back of the tire, but you're more likely to get about 1/2 way to the front.

Subtract the front dimension from the rear to get the toe in setting. Adjust this for the distance you are from the edges of the tires, i.e. if you are only 1/2 way from the vertical centreline of the tire to the front and rear edges, multiply the figure by 2, i.e. 1/8 becomes 1/4 etc.

Once you have the measurement you can figure out which side of the car needs the toe adjusted to bring the steering wheel back to centre. You may have to adjust both sides.

Once you make an adjustment, turn the wheel back and forth a few times to make sure everything is settled properly.

If you end up with the proper toe and the steering wheel off centre you can straighten things out by adjusting both tie rods. Using small steps, lengthen on side and shorten the other. As long as you change both sides the same amount the toe will remain constant.

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1978 240D work in progress