there are lots of threads on the subject if you or google search this site...here's what I use....
just depends on what your going to do and how high...
Gene and Ilana De Laney Mt. Helix, California
2012 RS sm5
2012 RS sm5 , 998cc V-Twin 106hp DIY brake and park brake Classic Black
I used two aluminum ramps and 4 concrete blocks. Secured everything with straps and drove my Spyder about 1/3 the way up. Had plenty of room to swap out the sway bar and links. Also put on the bumpskid since it was easy to access.
Note~recommend removing necessary plastic while on the ground.
I engaged the parking brake and also chocked the tires.
Next time I need to access underneath though I will follow another member's advice and just use my truck tailgate.
Of course if you are doing tire work or oil then that's a totally different requirement and there are lots of ways to safely do that listed in the forums.
Best of luck!
I use a service jack with a 1x6" piece of wood. Bring it in from the front and put the wood on the jack to protect the metal frame. I put ramps under the front wheels for safety. Works well for me. From there, I use the same jack and 1x6 to lift up the back and then put a third ramp under the back wheel. It works and it's safe. Enough said.