As far as being unable to change tires with difficult nuts, or having to use extenders, I'm telling you guys, buy a cross wrench. The tire tools that come with cars are not only generally garbage, I've seen them fall apart in use, but having a lever in only one direction makes it far harder to remove tough bolts.
With a cross wrench, you can have a hand pushing and one pulling, with your body centered around the work. It's much more efficient and the same person can apply a lot more force, and it's safer too.

Besides, cross wrenches have 4 sizes so you can help with other people's tires, and also change the tires on a trailer if you're pulling one.