What size jack ?

i have a 12T HF jack that I got on sale for $10 since it was a display out of box one. Anyhow not only should you need a jack but I also carry the 120V electric impact for the wheel lugs. The lugs have a pretty good torque on them and ya really dont want to be shaking the rig to loosen or tighten on the jack. So the electric lug wrench is the answer for me. Also as recommended a solid piece of a minimum of 3/4 plywood, not particle board to jack on. Also if you carry leveling boards if a rear tire is out you can run the good tire up on one of the leveling boards to help lift the rear. Front wheels are totally different and so you will need a short jack to get under to jack up. The rig has roadside service but I may not want to sit for hours waiting for help thus the jack and stuff. also the spare is underneath and needs pressure on it to release tension on the security nut holding everything in place! HF sell these lug wrenches many times for around $50 and another $20 or less for the lug sockets. Now out towd does not have a spare so its going to be interesting to get a fix on that. Guess I will get a 'spare' for it plus a jack and a jack handle and........ Guess they think new tires dont go flat or you never leave city limits anymore?