PRESENTATION OF SPORT TYRES

PRESENTATION OF SPORT TYRES

Tread compounds

Ing. Jozef Brezáni

12.3.2006

T. Vansovej 1054/45, 020 32 Púchov, Slovakia

2

Recommended use Compound

soft hardSurface

CIRCLE, HILL D11 D13 D15 dry asphalt

RALLY R1 R3 R5 dry asphalt

CIRCLE, HILL, RALLY W14 rain, wet road, asphalt

RALLY R11 R13 R15 gravel, unconsolidated surface

AUTOKROSS S17 S18 gravel, unconsolidated surface

AUTOKROSS, RALLY Z1 Z3 ice, snow

TOGETHER 14 compounds

Actual composition of tread compounds for sport tyres

3

Compounds

soft hardProducer

R1 R3 R5

N0 N2 N3

9 7 5

MATADOR

MICHELIN

PIRELLI

Tread compounds for dry asfalt

25

20

15

10

5

0R1 40 – 80 oC

R3 60 – 100 oC

R5 80 – 120 oC

Working temperatureAmbient temperature (oC)

4

Compounds

soft hardProducer

W14

P2 P3

W6 W5 W4

MATADOR

MICHELIN

PIRELLI

Tread compounds for wet asphalt

- recommended for very much

water on road

- can be used for muddy surface

- recommended for wet asphalt

5

Componds

soft hardProducer

R11 R13 R15

7 8 9

6 4 2

MATADOR

MICHELIN

PIRELLI

Tread compounds for gravel

R11 30 – 60 oC

R15 70 - 100 oC

Working temperatureAmbient temperature (oC)

25

20

15

10

5

0

R13 50 – 80 oC

6

Compound

soft hardProducer

Z1 Z3

D2 D3 D10

S1

MATADOR

MICHELIN

PIRELLI

Tread compounds for ice and snow

Ambient temperature (oC)

+5

0

-5

-10

-15

-20

Z3

Z1

7

New tread compounds for dry asphalt

Last year we developed and tested new tread compounds in version R3 and R5 – better grip,

steering responce and cornering stability

This year we are going to produce tyres with new compounds R3 and R5

Testing drivers are Jan Kopecký and Miroslav Jandík

Jan Kopecký won BARUM rally in grup N4

8

Right choise of tread compounds

Right choise of tread compound depend to many factors :

temperature of air

temperature of surface

roughness of surface

length of stages

weight of car

cubature and power

location of engine

wheel drive

set up – camber, toe in

9

Good working tyre

10

LF RF

LR RR

MEASURING OF TYRES - PRESSURE + TEMPERATURE

SIGNATURE :

PROTOCOL FROM TESTING OF SPORT TYRES No.

TEMPERATURE AIR/ROAD

1. MEASURING 2. MEASURING 3. MEASURING 4. MEASURINGLAPS: LAPS: LAPS:

TYRE STABILITY DURING TEST

TEST DRIVER SUBJECTIVE OPINION

20. 27.

21. 28.7. 14.

PARAMETER SCALE 1 - 10

ACCELERATION

BRAKING

STEERING RESPONSE

CORNERING STABILITY

23.

24.

25.

26.

16.

17.

18.

19.

6.

9.

10.

11.

12.

4.

5.

FWD/AWD/RWD

CUBATURE (cm3)

POWER (k)

CAMBER (mm) ENGINE

LOCATION

TYPE OF CAR

WEIGHT OF CAR

DATE/TIME OF TESTING

PLACE OF TESTING

DIMENSION

TREAD PATTERN

CONSTR. VERSION

COMPOUND/HARDNESS

1. 8.

13.

22.

TYPE OF TEST

TESTING DRIVER

TOE-IN (mm)

FRONT AXLE

REAR AXLE

WEATHER/SURFACE OF ROAD

NOTE :

2.

3.

TIME/LAP

15.

LAPS:

Protocol from testing of sport tyres