Originally Posted by Happy Hurricane
Hi, I'm interested to learn more about concerns related to one or more wheels being lifted off the ground by the jacks. I assume lifting all tires off the ground isn't recommended because of the loss of the benefit of your brakes (i.e. a rubber tire with a brake applied in contact with the ground will help prevent the rv from moving/sliding, given the smooth surface on the bottom of the jack). Are there other reasons why you wouldn't want one or more tires lifted off the ground for an extended time? Are the jacks rated to hold the full weight of the rv for an extended period of time? Thanks for any detail you can provide.
The jacks have either an 8, 14 or 20K capacity depending on which ones are installed on your coach. The easiest way to determine may be to measure the jack rod. It will be either 1.5, 1.875 or 2.25 inches in diameter respectively.