High lift jacks are notorious for being Unreliable and Dangerous tools for changing tires. High Lift jacks are also heavy and bulky. We strongly recommend against using a High Lift Jack to change a tire. They are also not very good tools for the other things they are touted for.
Much better and safer tools for lifting cars are available. A safer way to lift your vehicle on the trail to change a tire is the jack that came with your vehicle. Probably Either a scissors jack, screw jack or a bottle jack. For Liability reasons, no manufacturer includes High Lift Jacks with new vehicles and they do not allow their franchised dealers to install high lift jacks as aftermarket items when they sell a new vehicle.) If your vehicle has been lifted so the OEM jack is no longer tall enough to change a tire, carry blocks to allow it to work. Or take a look at hydraulic jack extensions like the ones offered by Bogert Manufacturing at Safejacks.com
One reason high lift jacks are unreliable is that they are seldom maintained properly and also they are usually carried outside of vehicles where they are subject to weather and dirt. The mechanism for these jacks is easily jammed either from dirt, rust or mechanical scoring of the moving parts. Also, many people use High Lift Jacks improperly when changing a tire. Most people simply put the jack under the bumper or other Jacking spot and begin to lift the vehicle. They have to lift the vehicle quite a ways before the tire begins to lift off the ground. The reason is that lifting from the bumper or the body one has to first “Unload” the springs before the tire begins to lift. As a result the jack has to be high up on the mast, thus less stable. This is particularly dangerous if the vehicle is not on flat and soft ground.
If you insist on using a high lift jack, below are some techniques that make using a High Lift Jack safer.
- Make sure the wheels are chocked to prevent the vehicle from rolling.
- Try to place the foot of the jack on level, solid ground. Often this is not possible.
- Use a ratchet strap between the frame and the axle so that when you lift the frame the tire raises
immediately, without having to first unload the springs.
- Make sure everyone stays clear from under the vehicle or near the jack.
- When lowering the vehicle do not stand too close to the jack handle.
For changing a tire a far better and safer jack is either the Scissors Jack that probably came with your vehicle or a Hydraulic Bottle Jack. Both of these types of jack lift directly at the axle rather than the bumper. You don’t have to first unload the springs or jack from a high position at the bumper. They are also more reliable, lighter and more compact than a high lift. I believe the only good place to store your high lift jack while on the trail is back home in your garage.
About High Lift Jack Hood Mounts:
I can’t believe anyone mounts their High Lift Jack on their hood. Do you really want that heavy mass of iron near your head in an accident, particularly a rollover? It is likely going to break loose from the sheet metal hood in an accident .