Heidenau Inner Tube 12/13 D – 34G Valve

Heidenau 12/13 D fits the 3.50, 110/100, 110/90, 120/80, 130/80, 120/70, 130/70, 140/70, 130/60, 140/60 size range across 12- and 13-inch rims — a broad range for maxi-scooters.

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

Material and durability

Heidenau 12/13 D 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 12/13 D comes with a standard-length, straight 34G valve — no bend angle and no extra stem length, for when rim depth allows a standard fit.

Application

Heidenau 12/13 D suits motorcycles, scooters and mopeds with a 12- or 13-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 12/13 D, check the 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.