Heidenau Inner Tube 15G – 41.5 G /86° Valve

Heidenau 15G fits the 5.50, 170/80, 170/70, 180/70, 200/70, 180/60, 200/60 size range for 15-inch rims — the same range as 15 H, but with a different valve.

The wall here is thinner than in the Cross class — 1.5–2.0mm: enough for everyday road riding.

Material and durability

Heidenau 15G is made from natural rubber: the material resists mechanical stress better than synthetic compounds and holds elasticity for longer. The trade-off: it loses pressure slightly faster than synthetic rubber, so check pressure with a gauge from time to time.

Valve and fitment

Heidenau 15G comes with a long-stem 41.5G/86° valve — the unusual 86° bend and reinforced valve base suit wheels with a specific valve-hole placement, different from the more common 90° fitting.

Application

Heidenau 15G suits motorcycles with a 15-inch rim under normal road conditions. Natural rubber retains elasticity better at low temperatures in Kazakhstan's winter, but ages faster than some synthetic materials during prolonged use in summer heat.

Fitting recommendation

When fitting Heidenau 15G, check the bend angle and length of the original valve and use a new rim tape of the correct size. Pinching the tube with tyre levers remains one of the most common causes of premature tube failure.