Note: It is not recommended to repair radial steel cord tires that have carcass damage caused by a foreign object.
Note: Corrosion may occur on the steel wire. This will cause the rubber to separate from the steel cord.
Note: It is usually impossible to determine when a collision with a foreign object occurred. The result may be damage to the tire carcass due to driving with insufficient tire pressure.
Note: Damage to the cord wires will sooner or later result in the rubber separating from the steel cord. As a result, after some time, long after the initial damage occurred, irreparable damage to the tire may occur.
Tire air pressure
The air pressure in the tires should be checked regularly. It is recommended to check the tire pressure every 14 days. Particular attention should be paid to this issue when driving long distances or when the car is loaded. A sporty driving style also requires the correct tire pressure or even slightly higher.
Slowly deflating a tire
Slowly deflating a tire is a dangerous phenomenon, as even experienced drivers often fail to notice it.
Due to insufficient air pressure in the tire and the associated greater lateral deformation work (internal friction) the tire materials become so hot that peeling of various frame elements and rubber compounds cannot be ruled out.
The final stage is most often a completely destroyed tire.
The reason for the slow deflating of a tire cannot always be determined, as the tire ends up being badly damaged and often missing frame elements.
Rising tire temperature with insufficient pressure
Fig. 4.25. Change in tire temperature at 180 km/h
The graph shows the change in tire temperature at a speed of 180 km/h (Fig. 4.25).
A – Normal range. Bei Einhalten des vorgeschriebenen Luftdrucks bleibt die Temperatur im Gleichgewicht.
B – Danger zone. When the air pressure in the tire is less than 0.3 bar, the temperature rises to over 120°C at high speeds.
C – Critical temperature. Tire damage begins.
T – Temperature in°C.
t – Travel time in minutes.
Visitor comments