Tyre damage due to incorrect inflation

The inflation pressure of a tyre is probably the most critical feature of tyre performance. It is also one of the most neglected aspects of tyre maintenance. It must be remembered at all times that it is the air inside the tyre that carries the load. One of the best means of reducing your tyre costs is to introduce a strict pressure maintenance program. The correct tyre pressure is determined by the type of vehicle tyre size, ply rating, load, speed and other operating conditions. The inflation pressures recommended by Bridgestone Firestone must be strictly adhered to, to obtain the best results. Correct inflation insures the correct tyre deflection for the load carried resulting in minimum heat and pressure buildup and maximum traction and floatation.

Damage due to under-inflation

Under-inflation results in excessive tyre deflection and distortion in the sidewall area. This leads to uneven tread wear, radial cracks, cord fatigue and excessive heat generation. The excessive heat that is generated will cause the tyre to fail prematurely with a heat separation. Under-inflation causes an excessive bead rocking in the flange area which results in a further loss of air pressure as the seal between the rim and the bead is affected.

Damage due to over-inflation

Over-inflation results in a higher ground bearing pressure due to a reduced contact area. This results in excessive wear in the crown area of the tyre, reduced traction and flotation. The smaller ground contact area results in an increase in spinning, skidding, vibrations and bead damage due to the harder ride. The likelihood of reinforce flex breaks, impact fractures and cuffing is increased due to the higher tension in the tyre cordbody and tread.