Tüv süd report UltraGrip8

TÜV SÜD Automotive GmbH

TÜV SÜD Automotive Tire Test 2010

Benchmark Test – Goodyear Ultragrip 8 205/55 R16 91 HReport No. 76244609

Test Period: December 2010

TÜV SÜD Automotive GmbH Page 2

TEST TIRES:

DIMENSION: 205/55 R16 91 H M+S

Benchmark Test M+S – 2010 Report No. 76244609

TIRE DETAILS

GOODYEAR

ULTRAGRIP 8

CONTI

WINTERCONTACT TS830MICHELIN

ALPIN A4


SCOPE OF TESTS

Wet Performance

- Braking (ABS, low & high µ)

-Aquaplaning (straight-line & in curve)

- Handling

Dry Performance

- Braking (ABS)

- Handling


Snow & Ice Performance

- Braking (ABS)

-Traction (ASR)

- Handling (Snow)

- Lateral grip (Ice)


TEST DETAILS

Test Locations:

- Wet & Dry Performance: Goodyear PG Mireval (F)

- Ice & Snow Performance: Ice Rink Montpellier (F) & Test World Ivalo (Finland)

Acquisition and Evaluation of Results

- All tests were exclusively carried out by TÜV SÜD Automotive personnel

- Snow & ice tests were carried out twice

- Firstly, the performance of each tire is assessed relative to the best tire in each individual test (i.e. the performance of the

best tire ≙ 100%)

- Secondly, the performance of the Goodyear tire is assessed relative to the average performance of the two competitors (i.e. the

average performance of the competitors ≙ 100%)

- The conversion of the results into a percentage value is done in a way that >100% always means better, <100% means worse.

Test Vehicles

- Wet & Dry and Ice (indoor): VW Golf VI 1.4 TSI (160 hp / 118 kW)

- Ice(outdoor) & Snow: VW Golf VI 1.4 TSI (122 hp / 90kW)



TEST RESULTS

Page 5

BRAKING ON ICE

- ABS-braking, Test 1: Ice rink, artificial ice, Test 2: Ivalo, natural ice - indoor: 20 to 8 km/h, outdoor 25 to 5 km/h

- Ø Stopping distance of Goodyear Ultragrip 8 (corrected): 10.8m (indoor) , 16.5m (outdoor)


80% 90% 100%

CONTI WINTERCONTACT TS830

AVERAGE OF COMPETITORS

GOODYEAR ULTRAGRIP 8

MICHELIN ALPIN A4

96%

100%

101%

104%

ICE BRAKING PERFORMANCE (Ø TEST 1&2) (RELATIVE, AVERAGE OF COMPETITORS = 100%)


TEST RESULTS

Page 6

TRACTION ON ICE

- Acceleration ASR, Test 1: Ice rink, artificial ice, Test 2: Ivalo, natural ice - indoor: 8 to 18 km/h, outdoor 10 to 25 km/h

- Ø Time / Acceleration of Goodyear Ultragrip 8: 4.57s / 0.61m/s² (indoor) , 4.74 s / 0.88 m/s² (outdoor)


80% 90% 100%




MICHELIN ALPIN A4

93%

100%

102%

107%

ICE TRACTION PERFORMANCE (Ø TEST 1&2) (RELATIVE, AVERAGE OF COMPETITORS = 100%)


TEST RESULTS

Page 7

LATERAL GRIP ON ICE

- ESP off, Test 1: Ice rink, artificial ice, Test 2: Ivalo, natural ice - indoor: R= 9 m, outdoor R=25 m

- Ø Lap Time / Lat. Acceleration Goodyear Ultragrip 8: 19.1s / 0.98m/s² (indoor) , 22.1s / 2.03 m/s² (outdoor)


80% 90% 100%




MICHELIN ALPIN A4

94%

100%

101%

106%

LATERAL GRIP ON ICE (Ø TEST 1&2) (RELATIVE, AVERAGE OF COMPETITORS = 100%)


TEST RESULTS

Page 8

BRAKING ON SNOW

- ABS-braking on compressed snow, double test - 50 to 5 km/h

- Ø Stopping distance of Goodyear Ultragrip 8 (corrected): 25.7m (test 1) , 26.7m (test 2)


80% 90% 100%

CONTI WINTER CONTACT TS830


MICHELIN ALPIN A4


99%

100%

101%

103%

SNOW BRAKING PERFORMANCE (Ø TEST 1&2) (RELATIVE, AVERAGE OF COMPETITORS = 100%)


TEST RESULTS

Page 9

TRACTION ON SNOW

- ASR acceleration on compressed snow, double test - 10 to 30 km/h

- Ø Time / Acceleration of Goodyear Ultragrip 8: 2.65 s / 2.09 m/s² (test 1) , 2.72 s / 2.04 m /s² (test 2)


80% 90% 100%



MICHELIN ALPIN A4


98%

100%

102%

105%

SNOW TRACTION PERFORMANCE (Ø TEST 1&2) (RELATIVE, AVERAGE OF COMPETITORS = 100%)


TEST RESULTS

Page 10

HANDLING ON SNOW

- ESP off (switch) - Subjective assessment & Lap times - Handling track with compressed snow, length 1300m

- Goodyear Ultragrip 8: Ø Speed : ~49.4 (test 1), 49.8 (test 2) km/h Ø Rating (out of max. 10): 8.2 (test 1) / 8.1 (test 2)


80% 90% 100%



MICHELIN ALPIN A4


99%

100%

101%

102%

SNOW HANDLING, OVERALL PERFORMANCE (Ø TEST 1&2) (RELATIVE, AVERAGE OF COMPETITORS = 100%)


TEST RESULTS

Page 11

AQUAPLANING STRAIGHT-LINE

- Water depth: ~ 8 mm - Aquaplaning speed at 15% slip difference

- Ø Aquaplaning speed of Goodyear Ultragrip 8: 86.9 km/h


80% 90% 100%



MICHELIN ALPIN A4


100%

100%

100%

101%

AQUAPLANING STRAIGHT-LINE

(RELATIVE, AVERAGE OF COMPETITORS = 100%)


TEST RESULTS

Page 12

AQUAPLANING IN CURVES

- Water depth: ~ 8 mm - R = 100m - Result based on Lateral Acceleration at va, lat -1.5

- Remaining transferable lateral acceleration of Goodyear Ultragrip 8: 3.36 m/s²


1,50

2,00

2,50

3,00

3,50

4,00

50 55 60 65 70 75 80 85

Tra

nsf

erab

le

late

ral a

ccel

erat

ion

[m

/s²]

Speed [km/h]

GRAPHS OF LATERAL ACCELERATION

Theoretical Theoretical -1,5m/s² GOODYEAR

CONTI MICHELIN80% 90% 100%

MICHELINALPIN A4



GOODYEARULTRAGRIP 8

100%

100%

100%

116%

AQUAPLANING IN CURVE

(RELATIVE, AVERAGE OF COMP. = 100%)


TEST RESULTS

Page 13

WET BRAKING high & low µ

- ABS-braking on two wet asphalt surfaces with different grip level - 80 to 20 km/h

- Ø Stopping distance of Goodyear Ultragrip 8 (corrected): 34.6m (high µ) , 40.4m (low µ)


80% 90% 100%

MICHELIN ALPIN A4




MICHELIN ALPIN A4




98%

100%

102%

104%

99%

100%

101%

102%

WET BRAKING PERFORMANCE (RELATIVE, AVERAGE OF COMPETITORS = 100%)HIGH µ

LOW µ


TEST RESULTS

Page 14

WET HANDLING

- ESP off (switch) - Subjective assessment & Lap times - Handling track with wet asphalt, length 1700m

- Goodyear Ultragrip 8: Ø Speed : ~82.4 km/h Ø Rating (out of max. 10): 8.3


80% 90% 100%

MICHELIN ALPIN A4




99%

100%

101%

102%

WET HANDLING, OVERALL PERFORMANCE



TEST RESULTS

Page 15

DRY BRAKING

- ABS-braking on dry asphalt surface - 100 – 0 km/h

- Ø Stopping distance of Goodyear Ultragrip 8 (corrected): 44.3 m


80% 90% 100%




MICHELIN ALPIN A4

99%

100%

100%

101%

DRY BRAKING PERFORMANCE



TEST RESULTS

Page 16

DRY HANDLING

- ESP off (switch) - Subjective assessment & Lap times - Handling track with dry asphalt, length 3300m

- Goodyear Ultragrip 8: Ø Speed : ~82.4 km/h Ø Rating (out of max. 10): 8.3


80% 90% 100%

MICHELIN ALPIN A4




100%

100%

100%

100%

DRY HANDLING, OVERALL PERFORMANCE



SUMMARY OF RESULTS (I)

Balance of Performance


Results relative to

the best tire (=100%)

in each test

GOODYEAR

ULTRAGRIP 8

CONTI

WINTERCONTACT

TS830

MICHELIN

ALPIN A4

BRAKING

ON ICE97% 92% 100%

TRACTION

ON ICE96% 87% 100%

LATERAL GRIP

ON ICE95% 89% 100%

BRAKING

ON SNOW100% 96% 98%

TRACTION

ON SNOW100% 93% 97%

HANDLING

ON SNOW100% 97% 99%

AQUAPLANING

STRAIGHT-LINE100% 99% 99%

AQUAPLANING

IN CURVE100% 86% 86%

WET BRAKING,

low µ100% 98% 94%

WET BRAKING,

high µ100% 100% 97%

WET HANDLING 100% 99% 98%

DRY BRAKING 100% 99% 100%

DRY HANDLING 99% 100% 99%

60%

70%

80%

90%

100%

BRAKING ON ICE

TRACTION ON ICE

LATERAL GRIP ON ICE

BRAKING ON SNOW

TRACTION ON SNOW

HANDLING ON SNOW

AQUAPL.STRAIGHT-LINE

AQUAPL.IN CURVE

WET BRAKING,low µ

WET BRAKING,high µ

WET HANDLING

DRY BRAKING

DRY HANDLING

GOODYEARULTRAGRIP 8

MICHELINALPIN A4

CONTIWINTERCONTACT TS830


SUMMARY OF RESULTS (II)

GY UG8 vs. Competitors


Results relative to the

average performance (=100%)

of the two competitors

GOODYEAR

ULTRAGRIP 8

Ø PERFORMANCE

OF COMPETITORS

BRAKING

ON ICE101% 100%

TRACTION

ON ICE102% 100%

LATERAL GRIP

ON ICE101% 100%

BRAKING

ON SNOW103% 100%

TRACTION

ON SNOW105% 100%

HANDLING

ON SNOW102% 100%

AQUAPL.

STRAIGHT-LINE101% 100%

AQUAPL.

IN CURVE116% 100%

WET BRAKING,

low µ104% 100%

WET BRAKING,

high µ102% 100%

WET HANDLING 102% 100%

DRY BRAKING 100% 100%

DRY HANDLING 100% 100%

60%

70%

80%

90%

100%

110%

BRAKING ON ICE

TRACTION ON ICE

LATERAL GRIP ON ICE

BRAKING ON SNOW

TRACTION ON SNOW

HANDLING ON SNOW

AQUAPL.STRAIGHT-LINE

AQUAPL.IN CURVE

WET BRAKING,low µ

WET BRAKING,high µ

WET HANDLING

DRY BRAKING

DRY HANDLING

GOODYEARULTRAGRIP 8

Ø PERFORMANCE OF COMPETITOR TIRES


SUMMARY OF RESULTS (III)

SPECIAL CONSIDERATIONS


BRAKING DISTANCES AND REMAINING SPEED

(corrected over the relative pro-/degression of the control or reference tire)

BRAKING SNOWGOODYEAR

ULTRAGRIP 8

AVERAGE OF

COMPETITORS

CONTI

WINTERCONTACT TS830

MICHELIN

ALPIN A4

Corrected distance 50 - 5 km/h (Test 1) 25,71 26,85 27,08 26,62

Remaining Speed (when GY UG 8 is 0) 0,00 10,23 11,25 9,22

Corrected distance 50 - 5 km/h (Test 2) 26,66 27,31 27,66 26,96


Conclusion 1: The stopping distance of Goodyear UG8 is by average 1 meter shorter than the average stopping distance of the competitors in test.

Conclusion 2: When Goodyear Ultragrip 8 has stopped, the average speed of the competitors is still up to 10 km/h.

BRAKING WET, LOW µGOODYEAR

ULTRAGRIP 8

AVERAGE OF

COMPETITORS

CONTI

WINTERCONTACT TS830

MICHELIN

ALPIN A4

Corrected distance 80 - 20 km/h 40,42 42,02 41,15 42,90


Conclusion 1: The stopping distance of Goodyear Ultragrip 8 is 1.6 meters shorter than the average stopping distance of the competitors in test.

Conclusion 2: When Goodyear Ultragrip 8 has stopped, the average speed of the competitors is still 15 km/h.

BRAKING WET, HIGH µGOODYEAR

ULTRAGRIP 8

AVERAGE OF

COMPETITORS

CONTI

WINTERCONTACT TS830

MICHELIN

ALPIN A4

Corrected distance 80 - 20 km/h 34,58 35,15 34,75 35,56


Conclusion 1: The stopping distance of Goodyear Ultragrip 8 is 0.6 meters shorter than the average stopping distance of the competitors in test.

Conclusion 2: When Goodyear Ultragrip 8 has stopped, the average speed of the competitors is still 9 km/h.