I carry a spare and have used it on a sidewalk flat. I also carrying a screw type pickup truck style jack....it scissors up with a long rod under the frame, smaller than hydraulic jack but just as ez and easier than bumper jacks.
I carry wheel chocks too as you donít know what the road level may be where your flat happens and jacking up the back for example is nice to have a chocks for the front.
One of the best things I carry is a small air compressor, all the auto parts have them, Walmart has them $39 bucks,...some even for $29 etc.
It comes in a little carry bag and will pump up your flat in 4 minutes, you can usually drive a hundred miles on a nail or a screw. I also carry these in all my cars and in each a blackjack tire plug kit,....
9 out of 10 flats are a nail or a screw, you can pump it up and drive away or pump it up and plug it, which is what I do, easy to find with a few squirts of water. And dishwasher soap, I have a little bag with that as well. Changing the tires is some work, pumping it up and plugging not hard..
I always break down the tire at home and put in an inside patch as plugs are emergency fixes only.
Nothing beats the pump, 9 out of 10 times 4 minutes and drive to the gas station and get it fixed.