>>1150309Evidently you have no idea how to do it properly and are trying to brute-force remove them, that's why.
SLOW THE FUCK DOWN and look at what you're doing.
Push the bead of the tire on both sides in towards the center of the wheel. If you do it correctly you can even manage to get one bead of the tire off the rim with NO tools. I usually use one tire lever anyway because it's a little faster.
Once you get it started in one section you can get the rest of the bead off on one side in a matter of seconds.
Now pull the tube out (if it's not tubeless). Getting the tire the rest of the way off the rim is now easy-peasy.
Installing the tire is just as easy. Get one side of the tire onto the rim. If you're not tubeless, then put a little air into the tube to give it some shape, and to expand it a little; get the valve stem through the hole, then stuff the rest of the tube into the tire. Once you've got it all the way in, open the valve and let the air out.
Now you start working the other bead of the tire onto the rim. Start at where the valve stem is; push the valve stem in slightly and get the bead onto the rim. Now, with both hands simultaneously, start working the bead onto the rim on both sides of the valve stem, working your way around the rim; you do it this way instead of only with one hand so the tube doesn't shift, which will make the valve stem skewed in the rim. When you get to the opposite side, go back around with both hands and push the bead on that side in towards the center of the rim again, which gives it some slack. Now you can work the remaining stretch of the bead the rest of the way onto the rim, using your thumbs to 'massage' it over the edge of the rim.
Congratulations, you've just learned how to R&R tires the correct way. Now inflate the tire to the correct pressure and remount the wheel.
