When checking a vehicle's alignment, what could excessively positive left rear camber and excessively negative right rear camber indicate?

Excessively positive camber on one side of the rear and excessively negative camber on the opposite side typically indicates that there may be an issue with the rear suspension's alignment, specifically with the rear cradle or subframe. This misalignment can occur if the rear cradle is not properly located or has shifted due to normal wear and tear, an accident, or poor maintenance.

When the rear cradle is out of alignment, it can lead to one wheel being tilted significantly inwards (negative camber) and the other being tilted outwards (positive camber). This uneven wear can affect tire performance and handling, as each side of the vehicle would be experiencing different angles relative to the road. In many cases, adjusting or shifting the rear cradle can correct this camber issue and restore proper alignment.

While worn tires and incorrect wheel size could contribute to performance issues, they do not specifically explain the extreme levels of camber found on each side. The root cause in this scenario points towards the alignment of the rear cradle needing attention to ensure all wheels are aligned correctly.