UPDATE:

Today I mounted & static balanced my 30th tire in about five years, where
each time I do this easy job, I learn new tricks to make it even easier.

For example, the "drop center" trick that Clare taught me was, by far, the
most critical trick of all. And, this time, I learned that it's a bad idea
leaving the packing tape on the tires as it makes it harder to seat the
bead if the beads are bent inward versus pushed out a bit.

While I've done all sizes from 15" wheels to 17" wheels, these 15" P225/75
Optimo H724 tires have thick sidewalls that make it a bit more difficult
than the 99V passenger car tires to break the 1st bead and seat the 6th
bead.

One mistake I made was to leave the packing tape still on the tires while
they waited for me to find my "round tuit", where the pinching in of the
beads made seating the tire problematic for the few seconds that it takes
to pop the bead into place.

I had to ask a second person to help pull up the upper bead with one hand
and a knee while I pushed up from below with two hands, where another trick
I learned long ago was to adapt an airgun to screw into the Schrader valve
so that filling it with air during the bead-seating process is essentially
hands free.

This mountain eats up everyone's tires, which _never_ get the claimed
mileage (not even close) but I can't use the warranty because I can't prove
that I do all the work myself.

Cost savings at $20/tire = $600 minus about $200 for tools = $400 to date,
but the real value is the satisfaction of being able to do it myself.

Here are some photos, just so you see what it looks like.
o This SUV needs to be taken in for a front-end alignment:
https://i.postimg.cc/q7t7ZRzj/mount01.jpg
o Breaking the 1st bead takes a couple of minutes:
https://i.postimg.cc/26DfF8vq/mount02.jpg
o The outside edge of the front tires wears too much:
https://i.postimg.cc/Hx2Fw0dK/mount03.jpg
o TREADWEAR is said to be 500 (but it won't get that):
https://i.postimg.cc/1zSWvgCZ/mount04.jpg
o The tire valves are about 1-1/2 inch long (.453):
https://i.postimg.cc/sXX4L55b/mount05.jpg
o I replaced the valves with all-metal valves:
https://i.postimg.cc/nVNNvLJn/mount06.jpg
o This home-made adaptor works great to seat the beads:
https://i.postimg.cc/WzZW9MvT/mount07.jpg
o Leaving the packing tape on was a bad idea:
https://i.postimg.cc/DwnjgJY3/mount08.jpg
o I mounted the "red spot" next to the tire valve:
https://i.postimg.cc/Pqq6GGj6/mount09.jpg

For anyone who wants to do it yourself, the tools cost about $200 where I
got most of mine from Harbor Freight, where those tools suck, but they do
the job.

What you need is:
o A dedicated bead breaker (the one with the mounter sucks even worse).
This tool is a pain to use but it breaks a bead in a couple of minutes.
You have to put a board on it because the base is too short.
o A bolted-in tire-mounting tool (you _must_ bolt it down!)
The bead breaker attachment on the mounter is nearly worthless.
o A static bubble balancer
o A set of tire irons (these aren't necessary, but are sometimes helpful
when you have a problem with the 6th and final bead)
o Vise grips - you need them - surprisingly - because the HF mounting tool
handle twists in your hands so the vise grips provide leverage to keep it
from twisting.
o A Schrader Valve Screwdriver (you need this to remove the insert so that
you can quickly fill the tire to set the beads during the final step)
o Dish detergent (everything is surprisingly easy when lubricated)
o Tire marking pen (to mark the inside sidewall after each rotation)
o Wheel weights (to static balance the wheel after mounting)
o Hammer (to tap the wheel weights into place)
o I have a valve-stem removal tool but it's not needed (just use a knife)
o Floor jack, wheel chocks, jack stands, lug wrench, torque wrench (to
remove and replace the wheels from the vehicle)
o Compressor, hoses, chucks, gauges (to seat the bead & fill the tire with
air)

Parts:
o Tires (Costco takes old tires for $1 each, plus sales tax)
o Wheel weights (it seems that 1 to 2 ounces seems to be needed most
o Valve stems (I kind of like the 0.453 diameter 1-1/2 inch steel ones)