AndreiP23

In addition. do not forget that is dangerous to use the retarder when is raining, snowy or when you are in steep turns, because you can jackknife. But if you want to use it, don't push it to the maximum, but step by step. Why you jackknife whit retarder? Retarder is using the transmission to brake. How it works? In the end, the main shaft brakes, so only the powered axle breaks. In this case, the weight of the trailer can push you and this results in a jackknife. PS: In real life, the powered axle tyres get a bit more wear when you use the retared.