Issue link: https://read.dmtmag.com/i/34500
JACK-KNIFE When you put the tractor and trailer into an extreme turn or “jack-knife” situation, the trailer is very vulnerable to rollover. Normally, traction has a positive influence on the handling of the truck. This is no longer true when you put a truck in a jack-knife condition. Whether dual or single configuration, you are forcing the tires to stop rolling and slide sideways. As the photo below clearly demonstrates, the trailer is twisting because the tires are holding their position on the road. This can lead to rollover! This is especially true for spread axle trailers and high center of gravity loads. Look at the lateral stress placed on the tires from the jack-knife situation. Turning angles should be minimized to avoid rollover threshold whether operating with duals or MICHELIN X One tires. ® ® Operation and Handling 61