Tyre Asia – May-June 2018

100 Tyre Asia April/May 2018

Apart from the fact that cost of a retread is generally in

the range of 30% of the cost of a new tyre, retread by

itself is a recycling process. Scrapping and destruction of

a tyre or any rubber product can cause atmospheric and

air pollution affecting the environment. Hence every tyre

should be recycled by a quality retreading process, as

many times as possible, to protect our environment and to

preserve planet earth

By VN Ramamoorthy*

ReTReADInG

Factors affecting

tyre life

I

f the objective of a vehicle owner

/ fleet operator is to minimize the

cost of tyres and to maximize

the performance and life of tyres

purchased, then it is imperative that he

should be aware and take care of the

factors that influence the performance

and life of tyres.

We saw, in a general way that the

major factors are – Application, Vehicle

condition, Road, Driving habits and

Seasonal effects. now we shall take a

close look at these factors for better

understanding and resultant action plans

to minimize their effects.

1. Application Factors :

They are in a nutshell, overloading

(beyond the recommended / rated

loads), Improper Loading of vehicles,

over or under inflation of tyres (every

tyre manufacturer specifies the rated

inflation and it is marked on each tyre),

over speeding beyond the recommended

speed and the improper dual matching

of tyres when fitted in a dual fitment

position.

2. Vehicle conditions :
   It goes without saying that it is essential
   to maintain the vehicle in good
   mechanical condition. Any short fall
   or lack of maintenance directly affects
   the performance and life of the tyres.
   each type of mechanical defect in the
   vehicle results in excessive / abnormal

TOE -IN TOE -OUT

NEGATIVE

CAMBER

POSITIVE

CAMBER

KING PIN

INCLINATION

Wrong Right