Most road surfaces are cambered (slanted) slightly to the right on each side of the center “crown” of the road. This is necessary for water drainage in rain; we would not want our roads to be “cupped” and pooling all the water in the road center, creating a lake.
Now, if the steering is set up to be perfectly centered traveling along a truly flat piece of pavement, then when traveling along a road with a slight rightward slant, the driver needs to compensate slightly with a tiny bit of left-turn steering to keep from drifting off the right side of the road.
Other factors may play a role as well, such as driver weight, a heavy passenger, crosswinds, etc.
The car can be set up to have the steering wheel dead centered when on the average crowned road. It’s up to you how you want yours set up.
If the steering wheel is not dead-center level, spokes parallel to the horizon on any given road, it does not
necessarily indicate a problem. However, if you notice a sudden
change from what it
had been, then that probably calls for a visit to an alignment shop.
Hope this has been useful and helpful.
