Many inexperienced cyclists underestimate the importance of wheel rims in keeping their tyre properly inflated and in good condition. Tyres—especially tubeless tyres—sit inside the rims, and the pressure of the air inside pushes them outwards. If a rim is damaged, it air can slowly to escape, as in the case of a puncture.
A damaged rim can also cause a lot of air to escape at once when you go over a bump or through particularly rough terrain.
And, of course, if your tyre is under-inflated, you are more likely to get a puncture.
By avoiding damage to your rims you can prevent a puncture. Rims can become damaged if you have a collision, hit a particularly bad bump or pothole, or even if you are a little heavy-handed when changing a tyre. A good way to spot rim damage that is not immediately apparent to the naked eye is to raise the wheel off the ground and spin it. Any warping or deformation should be much easier to spot when a wheel is spinning.
Another thing to consider is the condition of the rim tape. When you change your tyres or tubes, take the opportunity to inspect the rim tape. Make sure that it covers the spoke holes of your wheel. For tubeless tyres, the rim base is essential because it creates the seal. For tube type tyres, if the rim tape is damaged, the risk of puncture is very high. It is necessary to inspect the rim tape and sometimes to change it. In case of doubt get in touch with a certified professional.