TCI just installed 6 Michelin 275 70R22.5s on my 2005 Providence. I got just under 40,000 miles out of the OEM Goodyear G670s in the same size. I expected to get more miles out of them, the Michelin's tread depth looks a lot deeper than the Goodyears. The Goodyears also had un-even wear issues, as many here have reported, obviously contributing to their short tread life.
As most have already answered, they used my leveling jacks to raise the coach, then blocks and jack stands to make it safe for them to remove the wheels. It certainly saves time and probably just as safe as alternate methods using a jack with blocks or stands.
