Useing jack
What is the best location to jack up a 5th wheel to change a tire! Axel or frame?
Forum Discussion
Axle manufacturers have to assume that if they say to jack the axle at the spring perch, some people will only read the first half of the sentence and put the jack in the middle of the axle. Rather than explaining in great detail where to jack and have people ignore it, they say jack on the frame. Impractical from the users point of view but saves warranty arguments later on.
The trailer-aid style lift technically overloads the other tire but since it is a static load it shouldn't hurt it - otherwise uneven ground at parking lot entrances or in campgrounds would be blowing tires left and right. DRIVING on an overloaded tire generates heat which leads to premature failure. (load rating changes with inflation pressure which is why an underinflated tire can be considered overloading)
The trailer-aid style lift technically overloads the other tire but since it is a static load it shouldn't hurt it - otherwise uneven ground at parking lot entrances or in campgrounds would be blowing tires left and right. DRIVING on an overloaded tire generates heat which leads to premature failure. (load rating changes with inflation pressure which is why an underinflated tire can be considered overloading)
