Backing into Jack Knife Position
I will relate from my experience. Pulling forward I cannot get my RV anywhere close to having the Truck at a 90 degree angle with the fifth wheel, but backing that is easy to do. That being said there is lots of side pressure on both the tires and axles when turning, side pressure increases with the angle of the tow vehicle to the RV. Going forward, less of an angle and some forward movement lets the tire slip as it moves. Going backward with more of angle means less rotation of the tires but more side slippage thus the stress on all components.
The fellow that re-aligned my axles told me that hard backing on a hard surface is the number one cause of mis-alignment. If you weigh your RV, you will find both the tires and axles are worked very near the limit when loaded. Both the tires and axles are designed for rolling, not sliding side ways.
ST tires are designed for a little side slippage as compared to LT.
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Clay
Illinois Northwest
Montana 3455SA
2011 Ford F350 6.7 DRW CC LB
Previously had E350 Class C
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