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Presentation Opti Grip T U E V

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  • 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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