Influence Of Mileage On Tire Performances Test Results Of Summer Tires 225/45 R17 94W         Abstract of Test Report No. ...
TÜV SÜD Automotive         Project       Description                                             Objective            The ...
TÜV SÜD Automotive            Scope                                                    Durability                         ...
TÜV SÜD Automotive            Scope                                                Safety on wet roads                    ...
TÜV SÜD Automotive            Scope                                            Safety on dry roads          Braking       ...
TÜV SÜD Automotive   Test Population                                          Summer tires 225/45R17 94W              Manu...
TÜV SÜD Automotive      Test Vehicles            VOLKSWAGEN GOLF Mk V 2.0 FSI                                     VOLKSWAG...
TÜV SÜD Automotive       Test Details          Wear                                          Key Points           Tires fi...
TÜV SÜD Automotive       Test Results          Wear                      Expected Lifetime (Average of most worn axle)    ...
TÜV SÜD Automotive      Test Details      Performance                                          General Key Points       • ...
TÜV SÜD Automotive       Test Details       Wet Braking                                          Key Points         • Test...
TÜV SÜD Automotive       Results On       Wet Surface        Braking performance on wet surface, new / used tires (lowµ)  ...
TÜV SÜD Automotive       Results On       Wet Surface       Braking performance on wet surface, new / used tires (highµ)  ...
TÜV SÜD Automotive   Test DetailsAquaplaning Long.                                          Key Points    Test vehicle equ...
TÜV SÜD Automotive       Results On       Wet Surface                    Aquaplaning longitudinal ability, new / used tire...
TÜV SÜD Automotive    Test Details Aquaplaning Corn.                                          Key Points                Te...
TÜV SÜD Automotive       Results On       Wet Surface                      Aquaplaning in corners ability, new / used tire...
TÜV SÜD Automotive      Test Details      Wet Handling                                          Key Points      Subjective...
TÜV SÜD Automotive       Results On       Wet Surface                      Handling ability on wet surface, new / used tir...
TÜV SÜD Automotive       Test Details       Dry Braking                                          Key Points    • Test vehi...
TÜV SÜD Automotive       Results On       Dry Surface                Braking performance on dry surface, new / used tires ...
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Presentation Opti Grip T U E V

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Presentation Opti Grip T U E V

  1. 1. Influence Of Mileage On Tire Performances Test Results Of Summer Tires 225/45 R17 94W Abstract of Test Report No. 76230122 TÜV SÜD Automotive GmbH
  2. 2. TÜV SÜD Automotive Project Description Objective The objective of this project was to benchmark 225/45 R17 94W passenger car summer tires of different makes against each other during their mileage with special regards to: Safety on wet and Durability dry roads Some of the properties above were examined on used tires as well.TÜV SÜD Automotive GmbH • TÜV SÜD Group
  3. 3. TÜV SÜD Automotive Scope Durability Convoy driving over a distance of 30,000 km (three runs over a 10,000 km distance on public roads with identical vehicles fitted with the Tire tread benchmark tire makes) wear test NOTE: these “new” tires served as “used” tires in subsequent tests.TÜV SÜD Automotive GmbH • TÜV SÜD Group
  4. 4. TÜV SÜD Automotive Scope Safety on wet roads Measurement of braking distance from 80-20 kph (ABS braking) on: Braking - wetted asphalt (after 0, 10000, 20000 & 30000 km) - wetted concrete (after 0 and 30000 km) Subjective assessment of ride and handling criteria and timed laps on Handling a wetted handling circuit (after 0, 10000, 20000 & 30000 km) Aquaplaning Measurement of the transmittable lateral forces when cornering in corners through a water basin (after 0 and 30000 km) Aquaplaning Measurement of the aquaplaning speed at 15% slip in a water basin longitudinal of 9 mm water depth (after 0, 10000, 20000 & 30000 km)TÜV SÜD Automotive GmbH • TÜV SÜD Group
  5. 5. TÜV SÜD Automotive Scope Safety on dry roads Braking Measurement of braking distance from 100-5 kph (ABS braking) on dry asphalt (after 0 and 30000 km)TÜV SÜD Automotive GmbH • TÜV SÜD Group
  6. 6. TÜV SÜD Automotive Test Population Summer tires 225/45R17 94W Manufacturer Commercial name Tread design Goodyear OptiGrip Continental Sport Contact 3 Michelin Primacy HP Control tire: new Goodyear OptiGripTÜV SÜD Automotive GmbH • TÜV SÜD Group
  7. 7. TÜV SÜD Automotive Test Vehicles VOLKSWAGEN GOLF Mk V 2.0 FSI VOLKSWAGEN GOLF Mk V 1.9 TDI Specifications of test vehicle used for The wear test was performed with three tests on wet and dry surface: test vehicles specified as follows: Body 5-door saloon Body 5-door saloon Max. Engine power 110 kW / 6000 min-1 Max. Engine power 77 kW / 4000 min-1 Engine type 4 cyl. 2.0l petrol engine Engine type 4 cyl. 1.9l turbo diesel engine, direct injection Max. Speed 206 km/h Max. Speed 185 km/h Drive concept front Drive concept front Max. Engine torque 200 Nm / 3500 min-1 Max. Engine torque 250 Nm / 1900 min-1 Gearbox 6-speed manual transmission Gearbox 5-speed manual transmission Max. Permissible weight 1890 kg Max. Permissible weight 1910 kgTÜV SÜD Automotive GmbH • TÜV SÜD Group
  8. 8. TÜV SÜD Automotive Test Details Wear Key Points Tires fitted to five identical vehicles driven in convoy over a total distance of 10,000 km : • Chassis alignment check & adjustments as needed • Driver / vehicle rotation every 125 km; tire / vehicle rotation every 500 km  to ensure same conditions • Tread wear measured by digital gauge (1/10 mm accuracy) • Measurement intervals: every 3,350 km; 6 or 7 (Goodyear) spots in the tire„s 4 main grooves and on each shoulder measured 5 x on each tire (every 72°) • Tire inflation pressure checked at each tire / vehicle rotation (every 500 km) – no air loss noted on any of the test tires throughout the testTÜV SÜD Automotive GmbH • TÜV SÜD Group
  9. 9. TÜV SÜD Automotive Test Results Wear Expected Lifetime (Average of most worn axle) 55% 60% 65% 70% 75% 80% 85% 90% 95% 100% 105% Goodyear OptiGrip 100,0% after 30000 km Michelin 96,9% Continental 71,6%TÜV SÜD Automotive GmbH • TÜV SÜD Group
  10. 10. TÜV SÜD Automotive Test Details Performance General Key Points • Results show both absolute values measured and % evaluation in comparison to the average performance of all tires in the test. • Results of tread wear test (exp. Lifetime) are subject to linear extra- polation (based on wear between 0 and 30,000 km in the most worn groove of the average of axle of each brand) • Relative performance: performance compared to average performance of all tires in the test - value above 100 % = better - value below 100 % = worseTÜV SÜD Automotive GmbH • TÜV SÜD Group
  11. 11. TÜV SÜD Automotive Test Details Wet Braking Key Points • Test vehicle equipped with vehicle speed measurement equipment • One tire make selected as control tire / re-tested at end of each complete sequence  to consider potential changes of test conditions (e.g. temperature) • Deceleration on artificially wetted asphalt and concrete • Relevant factor for result: stopping distance • Minimum of 8 validated runs for each tire • Mean deceleration calculated based on 8 valuesTÜV SÜD Automotive GmbH • TÜV SÜD Group
  12. 12. TÜV SÜD Automotive Results On Wet Surface Braking performance on wet surface, new / used tires (lowµ) lowµ 65% 70% 75% 80% 85% 90% 95% 100% 105% Control tire = new Goodyear OptiGrip 100,0% Goodyear OptiGrip 100,3% new Michelin 90,4% Continental 96,4% Control tire = new Goodyear OptiGrip 100,0% Goodyear OptiGrip 100,1% after 10000 km Michelin 89,3% Continental 95,1% Control tire = new Goodyear OptiGrip 100,0% Goodyear OptiGrip 93,5% after 20000 km Michelin 85,7% Continental 86,7% Control tire = new Goodyear OptiGrip 100,0% Goodyear OptiGrip 95,1% after 30000km Michelin 75,6% Continental 73,0%TÜV SÜD Automotive GmbH • TÜV SÜD Group
  13. 13. TÜV SÜD Automotive Results On Wet Surface Braking performance on wet surface, new / used tires (highµ) highµ 70% 75% 80% 85% 90% 95% 100% 105% Control tire = new Goodyear OptiGrip 100,0% Goodyear OptiGrip 99,7% new Michelin 99,4% Continental 100,0% Control tire = new Goodyear OptiGrip 100,0% Goodyear OptiGrip 96,7% after 30000km Michelin 92,6% Continental 80,2%TÜV SÜD Automotive GmbH • TÜV SÜD Group
  14. 14. TÜV SÜD Automotive Test DetailsAquaplaning Long. Key Points Test vehicle equipped with vehicle speed measuring system and rotation wheel spin sensors on both front wheels • Driving: The vehicle is driven with constant speed into a flooded water basin with an approximate water depth of 9 mm. One side of the vehicle is running on dry asphalt the other side runs through the flooded segment. • Test: Acceleration with full throttle when entering the water basin. Speed and wheel spin are recorded. The corresponding vehicle speed to a wheel spin difference of 15% represents the aquaplaning speed. • Aquaplaning longitudinal: Characterized by maximally reached aquaplaning speed. Four valid runs in same gear.TÜV SÜD Automotive GmbH • TÜV SÜD Group
  15. 15. TÜV SÜD Automotive Results On Wet Surface Aquaplaning longitudinal ability, new / used tires 65% 70% 75% 80% 85% 90% 95% 100% 105% Goodyear OptiGrip 100,0% new Michelin 95,7% Continental 96,7% Control tire = new Goodyear OptiGrip 100,0% Goodyear OptiGrip 97,5% after 10000 km Michelin 93,1% Continental 89,9% Control tire = new Goodyear OptiGrip 100,0% Goodyear OptiGrip 97,2% after 20000 km Michelin 90,4% Continental 87,0% Control tire = new Goodyear OptiGrip 100,0% Goodyear OptiGrip 89,2% after 30000 km Michelin 83,6% Continental 79,8%TÜV SÜD Automotive GmbH • TÜV SÜD Group
  16. 16. TÜV SÜD Automotive Test Details Aquaplaning Corn. Key Points Test vehicle equipped with vehicle speed measuring equipment and lateral acceleration sensor • Driving: Constant speed & steering angle on dry asphalt (circle with app. 20 m segment flooded water) • Test: Lateral acceleration and speed recorded when vehicle enters flooded segment (light barrier); vehicle speed is increased run by run until clear decrease of lateral acceleration occurs • Aquaplaning in corners: Characterized by maximally transmittable lateral acceleration as well as drop after reaching max (the flatter the gradient the easier to control)TÜV SÜD Automotive GmbH • TÜV SÜD Group
  17. 17. TÜV SÜD Automotive Results On Wet Surface Aquaplaning in corners ability, new / used tires 50% 60% 70% 80% 90% 100% 110% Goodyear OptiGrip 100,0% new Michelin 92,3% Continental 95,4% Control tire = new Goodyear OptiGrip 100,0% Goodyear OptiGrip 80,9% after 30000 km Michelin 69,3% Continental 61,7%TÜV SÜD Automotive GmbH • TÜV SÜD Group
  18. 18. TÜV SÜD Automotive Test Details Wet Handling Key Points Subjective assessment of handling & ride by experienced test drivers on special, artificially wetted handling circuit (asphalt): • Driving at and beyond vehicle„s stability limit (ESP off / ABS on) • Avoidance of excessive under- / oversteer while driving at stability limit (striving for maximum reproducibility) • Lap times recorded and average speed calculated from lap time and track length • Use of 10-point scale for different performance criteria  one overall evalution scoreTÜV SÜD Automotive GmbH • TÜV SÜD Group
  19. 19. TÜV SÜD Automotive Results On Wet Surface Handling ability on wet surface, new / used tires 65% 70% 75% 80% 85% 90% 95% 100% 105% Control tire = new Goodyear OptiGrip 100,0% new Goodyear OptiGrip 100,3% Michelin 96,9% Continental 98,6% Control tire = new Goodyear OptiGrip 100,0% after 10000 km Goodyear OptiGrip 99,2% Michelin 94,9% Continental 95,0% Control tire = new Goodyear OptiGrip 100,0% after 20000 km Goodyear OptiGrip 97,0% Michelin 93,0% Continental 89,1% Control tire = new Goodyear OptiGrip 100,0% after 30000 km Goodyear OptiGrip 97,2% Michelin 90,3% Continental 83,1%TÜV SÜD Automotive GmbH • TÜV SÜD Group
  20. 20. TÜV SÜD Automotive Test Details Dry Braking Key Points • Test vehicle equipped with vehicle speed measurement equipment • One tire make selected as control tire / re-tested at end of each complete sequence  to consider potential changes of test conditions (e.g. temperature) • Deceleration on dry asphalt • Relevant factor for result: stopping distance • Minimum of 8 validated runs for each tire • Mean deceleration, calculated based on 8 valuesTÜV SÜD Automotive GmbH • TÜV SÜD Group
  21. 21. TÜV SÜD Automotive Results On Dry Surface Braking performance on dry surface, new / used tires 95% 100% 105% Control tire = new Goodyear OptiGrip 100,0% Goodyear OptiGrip 98,2% new Michelin 99,0% Continental 99,9% Control tire = new Goodyear OptiGrip 100,0% Goodyear OptiGrip 101,0% after 30000 km Michelin 102,4% Continental 100,1%TÜV SÜD Automotive GmbH • TÜV SÜD Group

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