Are Jack stands safe to work under?
Furthermore, is it safe to work under Jack stands?
You can keep the jack under there to be on the safe side, but make sure it's not unbalancing the car in any way, or fighting against the stands. If while working under the car you remove the wheels, it's never a bad idea to put them under the car as an extra safety measure.
Also to know is, can you lift a car on 4 jack stands?
If lifting just one end of your car, you'll need two jack stands. If you're lifting the entire car, use four jack stands. On soft earth, such as asphalt or grass, thick plywood can prevent them from sinking.
Jack Stand Load Ratings Typically, you'll see jack stands rated at 3 tons up through 20+ tons. For example, a pair of 2-ton jack stands are rated for loads up to 1 ton per stand. (Not to overstate the obvious, but we also want to make sure that all know: in the U.S., 1 ton equals 2,000 pounds.)