Wheel camber, caster and toe in/out angles
This three angles control your wheels, they have to be adjusted properly to give the car a good handling and low tire wear.
You can get more information from the Wikipedia page here:
How to do an easy check of the camber angle:
Here is an easy way to get a rough estimation of your car camber angles (there are many other ways too). You just have to use a spirit level and a calculator. Find a parking lot that is in level where you can do this.
Hold the spirit level against the wheel rim and let the water bulb be in level. Measure the L distance in the picture above. If your spirit level is too short or long you can cut a piece of wood of the proper length to line up to the wheel rim and then put the spirit level against this piece of wood. Then your L is the length of the piece of wood.
If you have a negative camber there will be a space on the upper side of the spirit level. Measure how big this is, the D distance above. Do it on both sides, the values should be almost identical.
In my case the L = 400 mm and D = 14 mm. With a simple formula you can calculate the angle from this for small angels.
You find the function arcSin or arc Sinus on most calculators. The result can be presented in arc units, it depends on the calculator, then you must recalculate it to degrees.
My own figures give an angle of 2 degrees, or -2 degrees because the wheel is tilted inwards. -2 degrees are a normal value for the front wheels. In back I have about 1 degree. If you have another car, check your car's repair manual what camber angels it should be.
On my car the camber and caster angels are normally not adjustable, you have to rebuilt the car to allowed that. But normally you never adjust these two angles, only the toe in/out angles. If the camber angle is out of limit then maybe the car has been smashed in earlier times.
Why did I do this? I was just a bit curious, if the car had been smashed seriously in earlier times I could have seen that from this values.
How to do an easy check of the toe in/out angle:
I will come back about this later.