NOTE: It is not recommended to repair steel cord radial tires with foreign body damage to the carcass. Corrosion can occur on steel wire. This causes the rubber to peel off the steel cord.
As a rule, it is impossible to find out when a foreign object was hit. As a result, damage to the tire carcass may occur due to driving with insufficient tire pressure.
Damage to the cord wires sooner or later leads to delamination of the rubber from the steel cord. As a consequence, after some time, much later than the initial damage occurred, irreparable damage to the tire may occur.
Tire pressure
Tire pressure should be checked regularly. It is recommended to check tire pressure every 14 days. Particular attention should be paid to this issue when traveling long distances or when the car is loaded. A sporty driving style also requires the correct tire pressure or even a little more.
Slow tire deflation
Slow tire deflation is a very insidious phenomenon, as even experienced drivers often do not notice it.
Due to insufficient air pressure in the tire and the associated greater work of lateral deformation (internal friction) tire materials heat up so strongly that peeling of various carcass elements and rubber compounds is not ruled out.
The final stage is most often a completely destroyed tire.
The reason for the slow deflation of the tire is not always possible to find out, since as a result the tire is badly damaged, and carcass elements are often missing.
Tire temperature increase with insufficient pressure
The graph shows the change in tire temperature at a speed of 180 km / h (pic. 4.25).
A - Normal range. Bei Einhalten des vorgeschriebenen Luftdrucks bleibt die Temperatur im Gleichgewicht.
B - Danger zone. With a lack of air pressure in the tire of 0.3 bar, the temperature rises above 120°C at high speeds.
C - Critical temperature. Tire damage begins.
T - Temperature in°C.
t - Driving time in minutes.
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