What would be the most normal cross caster specification?

The most normal cross caster specification is no more than 0.5 degrees. Cross caster refers to the angle of the vehicle's wheels relative to the longitudinal axis of the vehicle and affects vehicle handling and tire wear. A specification of no more than 0.5 degrees is typically considered ideal for most vehicles because it allows for consistent contact with the road, improved stability during driving, and helps maintain better alignment of the tires. When the cross caster angle is kept within this range, it ensures that the vehicle does not pull to one side and provides optimal steering response and control.

Wider tolerances, such as those indicated in other options, can lead to handling issues and uneven tire wear, making the 0.5-degree specification the most favorable in maintaining vehicle performance.