I was hoping that one of the members that had a blowout on I-75, right near Tampa, FL would chime in. If I remember right, it was on the Christmas holiday and besides no tire stores being open, it took forever for roadside assistance to come out. I seem to remember that they had to spend a day or so at the side of the road before they could get assistance, just because of a flat tire on a holiday weekend.
My lugs are torqued to 450 ft lbs, and to loosen them takes much more than that. I use a 5' pipe, slipped over a 3/4" breaker bar, along with a jack stand. With this set up I can stand/jump on the bar if I have to. I have never failed to break a lug loose, even after the tire techs torque them to 1,000,000 pounds. :B
As far as raising the vehicle, just to change a tire, I put blocks under my levelers and let the coach raise itself. Then I put jack stands under the frame and go to work. Of course I loosed the lugs before I raised the vehicle. The next time you have a tire changed, watch the tech and you will see some of their tricks. They never lift the whole weight of a tire.
I'm not saying that carrying a spare is for everyone. Certainly changing you own tire at the side of the road is not something everyone should try if it can be avoided. I just remember the member on this forum spending a long time stranded on the side of the road with his family when all they wanted to do was enjoy the Holiday.
Here is a picture of how to break loose ANY lug nut on even the largest vehicle. It can also be used to tighten the lugs after the tire is changed. I used the same method on my previous DP. It can be done by a mere mortal if ERS is not able to help. If ERS can help in a reasonable time frame, it becomes a routine service call if you have a tire available for them to change, especially if it is a holiday or the nearest tire shop, with your size, is far away.
