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 OptiGrip
TÜV 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 kg
TÜV 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 test
TÜV 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 % = worse
TÜV 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 values
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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 Details
Aquaplaning 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 score
TÜV 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 values
TÜV 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