There are three types of puncture:
Perforation and cuts
- Nails, stones, thorns, etc. may be the cause of perforation of the inner tube or tubeless tire. The aggressive nature of the components of some road surfaces can also give rise to cuts.
- The thickness and quality of rubber, the density of the casing cords and the presence of a textile reinforcing ply are factors which affect the tire's resistance to these punctures.
- The type of inner tube used also has an effect: nature of the rubber, thickness and the presence of a self-sealing liquid.
- Michelin recommend MICHELIN PROTEK MAX inner tubes for Mountain Bikes in particular and for urban use and city trekking.
- The inner tube is pinched between the rim flange and the road when passing over an obstacle at high speed (a pothole, for example).
- The tire's resistance to pinch shock stems from a wide cross-section, the thickness of the tire sidewall and the thickness of the inner tube walls.
- A suitable inflation pressure also goes a long way towards preventing this type of puncture.
Perforation by the rim well
- This occurs when the rim tape is unsuitable (width, material, incorrect centring, etc.) or in poor condition.
- This type of perforation is identified by the position of the hole in the tube, which is on the rim side, not on the tread side.
- It is so as to avoid this type of puncture that we recommend changing the rim tape each time a tire is replaced, as we do for new inner tubes.