Camber is measured in degrees and can be positive or negative. Positive camber means the top of the wheel is tilted away from the vehicle, while negative camber means the top of the wheel is tilted towards the vehicle. For trailers, camber is usually set to be slightly negative to account for load deflection.

The primary purpose of camber is to ensure that the tires maintain proper contact with the road surface. This helps in distributing the load evenly across the tire’s contact patch, which enhances traction and reduces uneven tire wear.

Over time, trailer camber can change due to wear and tear, or changes in load patterns. Regular inspection and maintenance are crucial to ensure that the camber angle remains within the manufacturer’s specifications. Proper alignment helps in extending tire life and improving safety.

Incorrect camber can lead to uneven tire wear, poor handling, and reduced stability of the trailer. For example, excessive positive camber might cause the inner edges of the tires to wear out quickly, while excessive negative camber can lead to outer edge wear.