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SURF 2008 – PORTOROZ SLOVENIA TYROSAFE WORKSHOP (Communication limited to passenger car tires)

SURF 2008 – PORTOROZ SLOVENIA TYROSAFE WORKSHOP (Communication limited to passenger car tires). What are the interactions between Tyre and Road to produce the Vehicle-Tire-Road performances?

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SURF 2008 – PORTOROZ SLOVENIA TYROSAFE WORKSHOP (Communication limited to passenger car tires)

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  1. SURF 2008 – PORTOROZ SLOVENIA TYROSAFE WORKSHOP (Communication limited to passenger car tires)

  2. What are the interactions between Tyre and Road to produce the Vehicle-Tire-Road performances? To what extent can tyre manufacturers, road manufacturers, and road owners act independently, or should they join their efforts to make progress on: Pollution: NOISE Safety: WET GRIP Emissions: ROLLING RESISTANCE Natural resources: WEAR TYRE NOISE REQUIREMENTS WITHIN THE BALANCE OF PERFORMANCES REQUIRED FOR A SUSTAINABLE MOBILITY

  3. Tyre-Road Interaction • Low impact of pavement characteristics on service to customer and society • Progress mainly in the hands of tire manufacturers High • High benefit of local pavement solutions • Progress in the hands of tire manufacturers, road manufacturers, and road owners None Wet Grip Noise Wear Rolling Resistance Natural resources Safety Pollution Emissions

  4. Vibrations Slippage 1mm - 1cm Road texture Archi-tecture Compound visco-elasticity Micro slippage Tye road interaction: Rolling Sound Emissions Mechanisms Percussion Indentation Acoustic network Road Ground Attenuation Tyre Tread design Organ Pipe Air Squeezing Ampli. / horn effect • High interaction between the Tyre and Road characteristics

  5. Braking distance: influencing factors Order of magnitude of influencing factors on braking distance

  6. Tyre/pavement interaction: WET GRIP The pavement is by far the biggest contributor to wet grip variability • High-level wet-grip & high level wear resistance pavement technologies are available • Improve tyre performance on these black spots conditions • Road pavement microtexture: • Eliminate black spots 0,3  0,5 (SFC)

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