Hi. I am building a little Parkour park at home with tires, and some other stuff. This is just to show what you can use a bunch of tires for. I did get mine from a tire salesmen
First get some used tires. Try to get ahold of big tractor tires.
The bigger the better for stabilization when you jump on them^^
Find a good spot for it.
And now your done^^
Time to dig^^
Now you are done and can start move around with your tire ^^