Presented by

Er.Balamurugan ArunachalamM.E., M.Sc., CSP, CMIOSH, MIIRSM, RSP, SMS

TYRE SAFETY

21st November 2017

MODULESModule 1 – Introduction

Module 2 – Date of manufacture / expiry date

Module 3 – Tyre pressure

Module 4 – Load rating

Module 5 – Speed rating

Module 6 – Tyre Size

Module 7 – Temperature resistance

Module 8 – Traction

Module 9 – Tread ware

Summary

Questions and Answers

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GROUND RULES

• Fire alarm / exits

• Toilets / smoking / drinks

• 20 minutes duration for this presentation

• Phones – switch off or put it silent

• Confidentiality

• Creditability – Internet

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By the end of this training you will be able to know about:

TIRE SAFETY

1. How to know the tyre manufacturing & expiry date

2. How to maintain tyre pressure

3. What is Load rating of tyre

4. Speed rating specification of tyre

5. How to identify the tyre Size

6. Temperature resistance of tyre

7. What is tyre Traction

8. What is tyre Tread ware

Tyre Safety

LEARNING OUTCOMES

At the end of the session, the candidates would have improved their knowledge about type safety & how tyre safety is vital part of over all safety performance of the vehicle.

MODULE 1 –INTRODUCTION

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Most of us drive motor vehicleson daily basis but hardly payattention to one of the most vitalparts of the vehicles - the tyres

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Unfortunately, very few of uschange this bad habit until it istoo late

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MODULE 2 –DATE OF MANUFACTURING / EXPIRY

DATE

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Tyres expire 4 years from the date ofmanufacture. A tyre's manufacturedate is stamped on one side of it

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2. Manufacture Date

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• A tyre's manufacture date isindicated by a 4-digit numberstamped on it

• The number indicates the weekand the year it wasmanufactured

• The expiration date is 4 yearsafter

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This number indicates thatthis tyre was manufactured onthe 7th week of 2007, which isthe same as February 2007.That would place the expirydate on February 2011

07 077th week of the year “February”

Year of 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 not expired

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Tyre Safety

Q&A

1) 10 17 stamps indicates?

A. October 2017

B. March 2017

C. 2010 May

D. None of above

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Q&A

1) 10 17 stamps indicates?

A. October 2017

B. March 2017

C. 2010 May

D. None of above

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B

MODULE 3 –TYRE PRESSURE

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Another important point that we miss many times isproper tyre inflation. Some vulcanizers will calibrateyour tyres at 28 PSI and if you are going to travelthey will, sometimes, bring your pressure down to24-26 PSI because they will “heat up on thehighway and the pressure will come back up”.DO NOT ALLOW THIS

3. Tyre Pressure

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• On the side of the tyre, you will find the maximumallowable inflating pressure for that specific tyre

• Some tyres have a maximum pressure of 32 PSI,some are rated at 44 PSI and some even at 50 PSI.Check your specific tyre to see what the maximumpressure is

• It is an acceptable practice to have your tyres a fewpounds below maximum allowable pressure but nottoo much

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MAX PRESS ACCEPTABLE

32 PSI 28 PSI

44 PSI 35 PSI

50 PSI 44 PSI

Different tyres are designedfor different pressures. Youwill find the maximum tyreinflation pressure as a smallnumber next to the rim on theside of the tyre. Never exceedthis pressure!

(44 psi) MAX PRESS

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Lower pressure increases tyre

heat. Infrared photograph of

tyres tested at high speed

shows damaging heat

increases as pressure drops

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Tyre Safety

Q&A

1) What is the right tyre pressure?

A. 32 psi

B. 20 psi

C. 60 psi

D. As per manufacture recommendation

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Q&A

1) What is the right tyre pressure?

A. 32 psi

B. 20 psi

C. 60 psi

D. As per manufacture recommendation

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D

MODULE 4 –LOAD RATING

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• The load we carry in our vehicles

put strains on the tyres

• Tyres have maximum load rating

designed for them

• Exceeding the maximum load

can cause failure and this may

result in accident

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4. Load Rating

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Attached table shows

the load index and

maximum load carrying

capacity per tyre in

pounds and kilograms

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Load index 109 maximum load capacity 2271 lbs or 1030 kg.

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Q&A

1) Load index 125 means?

A. 3690 Kilograms

B. 1677 pound

C. 3690 pound

D. Non of above

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Q&A

1) Load index 125 means?

A. 3690 Kilograms

B. 1677 pound

C. 3690 pound

D. Non of above

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C

MODULE 5 –SPEED RATING

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The speed rating of a tyre isindicated by a letter next to theload index. Adjacent tableshows the speed ratings inKm/h & Mph

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5. Speed Rating

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Q&A

1) Speed Rating Q means?

A. 160 Km/h

B. 100 Km/h

C. Above 300

D. 130 mph

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Q&A

1) Speed Rating Q means?

A. 160 Km/h

B. 100 Km/h

C. Above 300

D. 130 mph

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A

MODULE 6 –TYRE SIZE

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Many of us have bought tyresin the past and we are askedthe sizes we just read themfrom the old tyres and give tothe persons at the tyre shops.But, what do those numbersmean?

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6. Tyre Size

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P 265 / 60 R 18

Passenger car tire

Tire width in Millimetres

Radial Tire

Aspect ratio Height to width

of tire 60% of width in this

case

18 Inch Wheel

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MODULE 7 –TEMPERATURE RESISTANCE

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7. Temperature Resistance

• A tyre's resistance to heat isindicated by a letter

• Temperature resistance are ratedfrom highest to lowest resistanceas A, B or C

Symbol Area

A Hot area

B Normal Area

C Cold Area

Tyre Safety

Q&A

1) C Symbol means?

A. Hot area

B. Normal area

C. Cold area

D. All area

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Symbol Area

A Hot area

B Normal Area

C Cold Area

Q&A

1) C Symbol means?

A. Hot area

B. Normal area

C. Cold area

D. All area

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C

Symbol Area

A Hot area

B Normal Area

C Cold Area

MODULE 8 –TRACTION

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8. Traction

• Traction is a tyre’s ability to stop on wetpavement. A higher graded tyre shouldallow you to stop your vehicle on a wet roadin a shorter distance than a tyre with lowergrade

• Traction is graded from highest to lowest as”AA”, “A”, “B” and “C”

Tyre Safety

Q&A

1) Which is Higher grade traction?

A. A

B. B

C. C

D. AA

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Q&A

1) Which is Higher grade traction?

A. A

B. B

C. C

D. AA

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D

MODULE 9 –TREAD WEAR

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9. Tread wear

The tread wear number indicates the rateat which the tyre wears out. The higherthe tread wear the longer it should takethe tyre to wear out. Hence, a tyre gradedat 400 should last twice as long as a tyregraded at 200

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Tyre Safety

New tyre 10/32”=7.9mm

Q&A

1) Which is Higher tread wear?

A. 100

B. 200

C. 300

D. 400

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Q&A

1) Which is Higher tread wear?

A. 100

B. 200

C. 300

D. 400

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D

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Summary

TIRE SAFETY

1. Date of manufacturing / expiry date of tyre

2. Tyre pressure

3. Load rating

4. Speed rating

5. Tyre Size

6. Temperature resistance

7. Traction

8. Tread ware

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ISO 4000-1:2015specifies the designation, dimensions, and load ratings of metric-series tyres primarily intended for passenger cars.

Uniform Tire Quality Grade(UTQG) ratings

With nitrogen, your tire pressures will remain more constant, saving you a small amount in fuel and tire-maintenance costs. There will be less moisture inside your tires, meaning less corrosion on your wheels. You will not be able to feel any difference in the ride or handling or braking, unless your tire pressures were seriously out of spec and changing to nitrogen brought them back to the proper numbers.

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TIRE SAFETY

Tyre SafetyWhen you find yourself in the position to help someone, be happy and feel blessed because

God is answering that person's prayer through YOU.