bike tips and advice puncture resistance background

PUNCTURE RESISTANCE

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 tyre. 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 tyre'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.

 

PINCH PUNCTURE

  • 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 tyre's resistance to pinch shock stems from a wide cross-section, the thickness of the tyre 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 tyre is replaced, as we do for new inner tubes.
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