If the car is typically steering to one side, this is usually tire wear and/or alignment issues.

Another issue is each vehicle has different levels of Rake or Caster

Cars with more rake (angle) will track easier, but are more sensitive to unleveled roads. This can lead to driver fatigue when driving on unleveled roads. Cars with less rake (angle) will be less sensitive to unleveled roads. The drive will tend to constantly correct the vehicle though. The manufacturer will attempt to design the car with a good balance between them.

Unfortunately, some cars are just very sensitive to the level of the road. Roads are built with an angle to allow water to drain off during a storm.