Optimal negative camber

[Anker]

To determine optimal camber you use a tire pyrometer after a run, or even better by running the tire at maximum load on a skid pad for a while. If the outer side of the tread is warmer than the inner side you need more camber for optimal tire contact. After you have the camber right you check the pressure by comparing the temperature at the middle of the tread with the edges. If the center is warmest you need to reduce tire pressure and if its the other way round you need to increase it.

Optimal camber will vary from one tire brand to another and at its extreme between street tires and slicks.