Transferring load to jack stands

Tire rotations can be a bit more involved as you could end up jacking opposite corners, although there are ways around that too, like involving the spare, and it's never a bad idea to go through the process of getting it out and making sure it's in good shape anyway, but that doesn't sound like what you're doing. It sounds like you will be swapping one wheel at a time, and for that I honestly would not involve stands. The time that it will take you to get a stand properly set, lower the vehicle to it, change the wheel, raise it back off the stand, and get the stand out, could easily triple or quadruple the time involved. And making sure the stand is positioned properly and is clear of the jack could very well cause you to be under the vehicle, which can otherwise be avoided. Make sure the vehicle is in park and/or the parking brake is set, and on a level surface, preferably concrete over asphalt because the wheels on the jack will press into asphalt. Lay the new wheels next to each corner, position the jack at the first corner, break the lug nuts free, just free, not too loose, raise that corner, remove the lug nuts, position your hands at 9:00 and 3:00 on the outside of the tire, and remove it. Move the new tire into place, grab it at 9:00 and 3:00, lift and set it in place, and install your lug nuts. Visualize this and you'll see that it can be done without you ever being under the vehicle and without your hands in any possible pinch points. Absolute worst case scenario is that the jack fails completely and that corner of the car comes crashing down. Possibly the top of the wheel opening in the fender would hit your arms and push them down, but it's only going so far and the worst you might get is a bruise. Now yes, I've seen guys sitting there cross legged or whatever and if that lower control arm came down on their legs or feet it's really going to mess up the day, so just don't put yourself in that kind of position.