u/Dicearoo

Hello. I've become interested in cars and, since I enjoy DIY and learning practical things, I'd like to be able to change my own tire. I've read things and watched videos, so I think I have a decent idea, but here's the question: Once I've done it, how do I make sure I've done it safely? I'm picky about safety, so I want to make sure nothing goes awry!
Edit: To clarify, I mean changing a tire on the car, not mounting a tire on a wheel.