Oh and not kidding... get a HFT electric impact gun and carry a generator big enough to power it. (Or if you want pneumatic, a big enough air compressor to run it). If you ever feel the need to change a tire yourself, you'll be glad you have it. Removing 8 lugs (maybe more on a bus?) is no fun by hand. The electric impact is pretty strong but not as strong as pneumatic like tire shops have, so you can use it to torque down the lug nuts too in a pinch.
I have used my impact to remove and install the alternator pulley nut for my F250 in an O'Reilly parking lot in a pinch. Originally bought it for pressing in the F250's new ball joints too. It's handy for removing the vac pump pulley too. And of course, lug nuts on anything.
Alternatively, get a big breaker bar and long enough 1/2" extensions with a proper sized deep socket for your lug nuts. The extensions are needed for dually rears due to the lug nuts being so deep in. I got the HFT impact extensions since of course you can use them for both impact and non.
Get an oversized capacity bottle jack vs what it'll need in case you need to change the tire too, assuming you have a spare tire on it? I got a 12 ton (24k lb) bottle jack for my 11k GVWR RV from HFT. In your case you might want a 20 ton bottle jack? It partly depends on how high your rear axle is off the ground since bigger jacks are usually taller.
These are also very nice for safer lifting with a bottle jack. I got one for doing the rear wheel seals on my RV:
https://bottlejackbuddy.net/the-big-one
I bought an Esco 22 ton pin style jack stand since I don't trust the cheapo ratcheting ones for heavy loads. They are low profile vs 12 ton ratcheting ones, which is great for my RV. I don't have to jack it up super high to get the stand under the axle.
The jack stand is on it's lowest of 3 heights, just enough to get the tires off the ground. (The weight was off of the jack in this pic)
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