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On a sharp turn the spring packs will take a certain amount of stress with flex. You will notice this when making a sharp turn where one axle will move over to the side more than the other pending type of ground friction under the tires. Once the springs reach a point where there is no more horizontal flex the shackle hangers must take the stress and will start to tear away from the frame with the excessive sideways motion. On heavy axle systems, the suspension will only allow a certain amount of horizontal movement and then the tire/axle assembly must scoot sideways.
With the type of suspensions that are under the Montanas, it is best to refrain from sharp turns on dry asphalt or concrete surfaces.
This is where pull-thoughs are advantageous in preventing suspension problems on any tandem/triple axle 5th wheels.
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