Jack

Our Class C on the E450 chassis came with a lug wrench. I also carry a 6 ton bottle jack, a short piece of 1x6 board to sit the jack on in case the ground surface is soft, plus a torque wrench and a 19mm socket.

In 13 years and 93,000 miles of travel I have never had a need to change a flat. I'm on my 3rd set of Michelins with the older tires replaced due to age.

When I buy new tires, I always re-torque the lug nuts, as the guys with the impact wrenches always seem to over tighten the nuts. With some of the nuts, I have to stand on the end of the lug wrench in order to loosen them so I can properly re-torque them.

For our E450 the correct torque of 140 ft-lbs is stamped on the end of the nuts, as seen in this picture.


One additional thing - The rear wheels can rust to the axle hub, making them very difficult to get off. When I changed the brake pads on the rears a couple of years ago I had to use the trick of loosening the lug nuts a turn or so, then rolling the RV forward a little and jamming on the brakes. This broke the rust bond so the wheels could come off. Never had this issue with the front wheels.

A small 3-4 ton floor jack won't cut it. You need at least a 12 ton bottle jack. Reason for a 12 ton...it's a lot easier to pump it up, especially over a smaller 6-8 ton jack. The leverage on a 12 ton is very easy, especially when your in an akward position under the motor home.
How do I know? Tried the smaller jacks, and 12 ton works perfect.
A piece of 2" x 12" x 12" underneath works just fine.
And rather than carrying a huge spinner lug wrench, I carry a 1/2 inch drive Kobalt electric impact wrench. Has plenty of power to take nuts off n on. If your on the road, just use generator for power (of course, if no genny, lug wrench is necessary).
I also carry and have used a Camco Tire Changing Tool, part #44511. It works great to lever the tire/wheel up to the wheel studs.
Have and carry this stuff, not used it on my rig, but have used it twice on the road and in a campground to help others.
Grumpy

This is what I carry for faster tire change. I seem to have more flats on my trailer so I can jump the flat axle up using the good axle and no jack required. Even a front tire you could drive up on this "partially" to eliminate the need for the jack to lift the vehicle all the way. I think many people carry similar type tools to level their trailers.

Trailer Aid

I think this should make for an interesting discussion.

In addition to a jack and lug wrench, I think you might need an electric impact wrench to get the lugs loose......or a LONG breaker bar.

I haven't convinced myself that I would be better off changing the tire myself than I would be "limping" to the next exit or waiting for help if there is no cell service. Of course, you can't really move at all with a flat front.

Part of my consideration is the size and weight of the tire/wheel and the fact that my spare is UNDER the RV......and that they torque those lugs down VERY tight.

Easiest to jack up would be a 3-4 ton floor jack and only jack up one corner at a time, but you're pushing the limits of that setup, and a 3-4ton floor jack is not light nor easy to store.

Easiest to store and otherwise deal with is a bottle jack, but they aren't very fast at jacking things up, and may require some re-setting to get onto taller jackstands or to lift a flat tire off the ground. You can help this a little by driving onto blocks first.