This time we will discuss over- and onderstuur. What is it? How can we create it. Almost everything you want to know about it will be discussed.
Understeer
If a car understeers it is trying to go more to the outside of the corner, like this picture shows.
When a car is oversteering the rear wheels slip more to the outside of the corner in comparison to the front wheels. The driver can correct this buy steering away from the corner, but it might be that this unbalances the car. Ofcourse you can also use it to get ready for the next corner but this is a highly complex technique.
We will not tell you which one is better. One driver will prefer oversteer while the other one prefers understeer. This is completely to your own taste and when you adjust your car to it you might have some quicker laps the next time you will race.
Which brings us to our next point; What if you have a car that is understeering while you prefer to have it oversteering? The opposite might also apply. We have put all this data in a table for easy comparison.
| Part | Decrease understeer | Decrease oversteer |
| Weight distribution | Center of gravity to rear | Center of gravity towards front |
| Front dampers | softer | stiffer |
| Rear dampers | stiffer | softer |
| front swaybar | softer | stiffer |
| rear swaybar | stiffer | softer |
| Front tyres | wider | narrower |
| Rear tyres | narrower | wider |
| Diameter of wheels | bigger | smaller |
| diameter of wheels | smaller | bigger |
| tyre pressure front | decrease | increase |
| tyre pressure back | increase | decrease |
| Camber front | more negative | more positive |
| Camber back | more positive | more negative |
| rearspoiler | smaller | bigger |
| height of car front | lower | higher |
| Hoogte auto achter | higher | lower |
| Toe in front | less | more |
| Toe in back | less | more |
If you want to adjust your car for over and understeer or if you want to try to see what works the best we advice you to start with things that are the easiest to adjest. Tyrepressure is a nice way to see which one works better for you for example. With most cars toe in and toe out is also adjustable so that is also a way to work with. Only if you are sure then buy parts like spoilers and better swaybars.
Also pay attention to the fact that having a staggered wheel setup should not be done with 4wd cars, as this is not good for the handling.
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