OVERLOADING OF TYRES

Stratford Evening Post, Volume II, Issue 355, 12 September 1933, Page 3

OVERLOADING OF TYRES

Inflation and Load | V7 There are numbers ol users of ears £ and motor trucks who hold the inis- jx guided belief that as lung as the inlla- A lion pressure of the tyres is _ not | | allowed to fall below normal, it is quite a safe practice to call upon the \ tyres to support an overload. It may A be less damaging for tyres which are || forced to carry an undue weight to A be inflated to a higher, rather than v? a lower, pressure than that prescrib- \ ed, but' where abnormal loads are ft habitually transported the proper; $ course is to make use of a casing i which has been designed to support j the degree of load imposed upon it. A Actually, it is the compressed air <3 in the inner tube, and not the tire and tube, which carries the weight, gi and the inflation pressure advised by the manufacturers is one that will A permit of adequate resiliency and cushioning effect without occasioning so great a flexing of the tyre walls w that they will become weakened by A excessive movement and internal \ friction. ft Manufacturers emphasise that, al- A though to the average tyre mileages A obtained today are remarkable, the h owners who obtain the best results arc those who lit lyres of a size ap- ft proximate to tho load to bo carried. Only by observing that precaution can there be obtained the trouble tree service which most modern cas- m ings will give when they are not subjected to unfair treatment. The weight carrying capacities of various sizes of tyres, both balloon and high pressure, are indicated in the schedules issued by the manufacturers, and such loads cannot be consistently exceeded without a risk of shortening the useful- life of the tyre.