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Understanding Global Tire Regulations Katie Herta 20 September 2006

Title. Goals. Procedure. Dimensional Tests. Endurance Tests. Tire Strength Tests. High Speed Tests. Bead Unseating Tests. Additional Tests. Conclusions. Informal document No . GRRF-60-21 (60th GRRF, 18-22 September 2006 agenda item 5.1.).

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Understanding Global Tire Regulations Katie Herta 20 September 2006

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  1. Title Goals Procedure Dimensional Tests Endurance Tests Tire Strength Tests High Speed Tests Bead Unseating Tests Additional Tests Conclusions Informal document No. GRRF-60-21 (60th GRRF, 18-22 September 2006 agenda item 5.1.) Understanding Global Tire RegulationsKatie Herta20 September 2006

  2. Title Goals Procedure Dimensional Tests Endurance Tests Tire Strength Tests High Speed Tests Bead Unseating Tests Additional Tests Conclusions General Information for Points of Clarification • U.S. will refer to the standard: US FMVSS 109 (U.S. for remainder of presentation) • Presentation does not provide details of the various procedures

  3. Dimensions – Section Width Grouping Tolerance = ± 3.5% for non M+S Tolerance = ± 4.5% for M+S Take the average of 4 points, 180 kPa, 23 ±2 °C Peru, China 170 kPa, 23 ±2 °C Gulf Take the average of 6 U.S., Australia, Gulf, Malaysia, Japan, ECE, Peru, Russia 29 - 38 °C Australia, U.S., Malaysia, Gulf 6 points measured U.S. 180 kPa U.S. Australia, Gulf, Malaysia, Japan, ECE, Peru, Russia Australia, U.S., Malaysia 23 ±2 °C Measure 6 points and use an Equation to get Section Width, 23 ±2 °C Australia, Malaysia Japan, ECE, Russia S = S1 + k(A - A1)

  4. 4 points measured, average, 180 kPa, 23 ±2 °C Indonesia, China 170 kPa, 23 ±2 °C Gulf Takes the maximum Brazil, ECE, Russia, Gulf, India, Japan 180 kPa, 23 ±2 °C 6 points measured Brazil, ECE, Russia, India, Japan U.S., Australia, Gulf, Malaysia, Japan, ECE, Peru, Russia, Brazil, India, Mexico 180 kPa, 23 ±2 °C Australia, Malaysia, Mexico Takes the average U.S., Australia, Malaysia, Mexico 180 kPa, 29-38 °C US Dimensions – Overall Width Grouping Tolerance = ± 3.5% for non M+S (+ 8mm for tires with protective rib) Tolerance = ± 4.5% for M+S

  5. Dimensions – Diameter Grouping Tolerance = ± 1% 170 kPa, 23 ±2 °C Divide the circumference by 3,1416 23 ±2 °C Gulf U.S., Australia, Gulf, Malaysia, Japan, ECE, Peru, Russia, Brazil, India, Mexico, China, Indonesia Australia, Malaysia, Japan, ECE, Peru, Russia, Brazil, India, Mexico, China, Indonesia 180 kPa U.S., Australia, Malaysia, Japan, ECE, Peru, Russia, Brazil, India, Mexico, China, Indonesia 29-36 °C U.S., Japan, ECE, Russia, China, Indonesia

  6. Tire Endurance Test Procedure Grouping Speed 120 km/h or 110 km/h for winter tires, 180 kPa Speed 81 km/h China,, Australia, India, Indonesia, Japan, Mexico, Peru, Malaysia, US FMVSS 109 China,, Australia, India, Indonesia, Japan, Mexico, Peru, Malaysia, US FMVSS 109 China, U.S., Australia, Mexico, India, Indonesia, Japan, Malaysia, Peru If do not pass Speed 80 km/h at 100%, 110% and 115% load, 170 kPa Gulf

  7. Tire Strength Procedure Grouping Inflation Pressure: 170 kPa, Number of Measurements: 5 Gulf Number of Measurements: 4 (may be able to increase the number) Indonesia Inflation Pressure: 180 kPa U.S., China, Australia, Gulf, India, Indonesia, Japan, Malaysia, Mexico, Peru Test must result with at least 1 casing failure U.S., China, Australia, India, Indonesia, Japan, Malaysia, Mexico, Peru U.S. Number of Measurements: 5 U.S., China, Australia, India, Japan, Malaysia, Mexico, Peru Testing does not require casing failure China, Australia, India, Japan, Malaysia, Mexico, Peru

  8. High Speed Procedure Grouping With extra step @ SSY China, Indonesia, Japan ECE Similar Regaulations China, ECE, Australia, Brazil, India, Indonesia, Japan Without extra step @ SSY ECE, Australia, Brazil, India China, U.S 109, U.S. 139, ECE, Australia, Brazil, Gulf, India, Indonesia, Japan, Malaysia, Mexico US FMVSS Simliar Regulations Speed Steps of 140, 150 and 160 km/h at 85% load U.S. 109, U.S. 139, Gulf, Malaysia, Mexico Gulf, Malaysia, Mexico, U.S. 109 Speed Steps of 120, 130 and 140 km/h, 100% load, 210 kPa Speed Steps of 120, 130 and 140 km/h Gulf No Extra Steps for Higher Speed Rated Tires Gulf, Malaysia, Mexico, U.S. 109 Speed Steps of 120, 130 and 140 km/h, 88% load, 220 kPa Malaysia, U.S. 109 Malaysia, Mexico, U.S. 109 Extra Steps for Higher Speed Rated Tires Mexico

  9. Bead Unseating Procedure Grouping Block A 4 Points Measured Indonesia, Japan India, Indonesia, Japan Block B India, Japan Block C China, U.S., Australia, Gulf, India, Indonesia, Japan, Malaysia, Mexico China, Mexico (10 mm longer), Australia 180 kPa China, U.S., Australia, Mexico 5 Points Measured Block B China ( 4 pt. min.), U.S., Australia, Gulf, Malaysia U.S., Australia 170 kPa, Block C Gulf Block A Block C Block B

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