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Most of us drive motor

vehicles on daily basis

but hardly pay attentionto one of the most vital

parts of the vehicles -

the tyres

TIRE SAFETY

Tyre Safety

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Unfortunately, very

few of us change this

bad habit until it istoo late

TIRE SAFETYTyre Safety

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Tyres expire 4 years afterthe date of manufacture. A

tyre's expiry date is

stamped on one side of it

TIRE SAFETY

Expiry Date

Tyre Safety

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A tyre's expiry date is

indicated b y a 4-digit

numberstamped on it The number indicates

the week and the year it

was manufactured

The expiration date is 4

years after


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This number indicates

that this tyre was

manufactured on the7th week of 2007,

which is the same as

February 2007. That

would place theexpiry date on

February 2011

07 0707 07

7th week of the year February

Yearof manufacture 2007


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Expired tyres are likely to burst

when used, and this might result

in very serious, or even fatal,

accident

It is advisable to check our tyres

and make sure they have notexpired


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Another important point that we miss many

times is proper tyre inflation. Some vulcanizerswill calibrate your tyres at 28 PSI and if you are

going to travel they will, sometimes, bring your

pressure down to 24-26 PSI because they will

heat up on the highway and the pressure will

come back up. DO NOT ALLOW THIS

Tyre Pressure

Tyre Safety

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On the side of the tyre, you will find the

maximum allowable inflating pressure for

that specific tyre

Some tyres have a maximum pressure of 32

PSI, some are rated at 44PSI and some even

at 50 PSI. Check your specific tyre to see

what the maximum pressure is It is an acceptable practice to have your

tyres a few pounds below maximum

allowable pressure but not too much


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MAX PRESS ACCEPTABLE

32 PSI 28 PSI

44 PSI 35 PSI

50 PSI 44 PSI

Different tyres are

designed for different

pressures. You will

find the maximumtyre inflation pressure

as a small number

next to the rim on the

side of the tyre. Neverexceed this pressure!

(44 psi) MAX PRESS


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Lower pressure

increases tyre

heat. Infrared

photograph of

tyres tested at

high speedshows

damaging heatincreases as

pressure drops


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The load we carry in our

vehicles put strains on thetyres

Tyres have maximum load

rating designed for them

Exceeding the maximum

load can cause failure and

this may result in accident

TIRE SAFETY

Load Rating

Tyre Safety

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Attached table

shows the load

index and

maximum loadcarrying capacity

per tyre in pounds

and kilograms


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Load index 109 maximum load capacity 2271 lbs 1030 kg.


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The speed rating of a

tyre is indicated by aletter next to the load

index. Adjacent table

shows the speed

ratings in Km/h & Mph

TIRE SAFETY

Speed Rating

Tyre Safety

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Many of us have

bought tyres in thepast and we are asked

the sizes we just read

them from the old

tyres and give to thepersons at the tyre

shops. But, what do

those numbers mean?

TIRE SAFETY

Tyre Size

Tyre Safety

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P 265 / 60 R 18

Passenger car tire Tire width in Millimeters

Radial Tire

Aspect ratio Height to width

of tire 60% of width in this

case 18 Inch Wheel


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Temperature Resistance

A tyre's resistance to

heat is indicated by aletter

Temperature resistance

are rated from highestto lowest resistance as

A, B or C

Simbolo

Symbol Area

AHot area

Area Caliente

BNormal Area

Area Normal

CCold Area

Area Fria


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Traction

Traction is a tyres ability to stop

on wet pavement. A highergraded tyre should allow you to

stop your vehicle on a wet road

in a shorterdistance than a tyre

with lower grade Traction is graded from highest

to lowest as AA, A, B and

C


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Treadwear

The treadwear number

indicates the rate at which thetyre wears out. The higher the

treadwear the longer it should

take the tyre to wear out.

Hence, a tyre graded at 400should last twice as long as a

tyre graded at 200


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Summary

TIRE SAFETY

Watch the following indicators in your tyres to ensure safety:

Date of manufacture / expiry date

Inflation pressure

Load rating

Size

Speed rating

Temperature resistance

Traction

Treadware

Tyre Safety

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Thank You!


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