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New Ultra Low Profile Wide Base Single Tires

New Ultra Low Profile Wide Base Single Tires. …or, what we call X-One. by Mike Hurley Segment Manager –Michelin NA Bulk Fleets. New Wide Single topics. What are they all about ? What are their advantages ? What are their disadvantages ?

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New Ultra Low Profile Wide Base Single Tires

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  1. New Ultra Low Profile Wide Base Single Tires …or, what we call X-One by Mike Hurley Segment Manager –Michelin NA Bulk Fleets

  2. New Wide Single topics What are they all about ? What are their advantages ? What are their disadvantages ? Are they here to stay or are they just a “flash in the pan”?

  3. What are they all about ? The Premise : • To increase the overall productivity of the trucking industry by optimizing the vehicle / tire / wheel configuration.

  4. What are they all about ? • These are NOT “Super Singles” • 445/50R22.5 is ~ 4” less in O/A Diam than 425/65R22.5 ~ 5.3” less than 445/65R22.5

  5. Genesis • Conceived in Europe • Developed and tested in the US • Introduced in fall of 2000 at the Great American Truck Show, Dallas, TX

  6. Testing • Thousands of tires over hundreds of millions of miles in both internal and fleet testing • Track testing to evaluate vehicle dynamics including sudden failure conditions • Ensuring retreadability

  7. Market • Hundreds of thousands of tires on hundreds of thousands of wheel positions • Hundreds of BILLIONS of road miles since launch • Later introduced in Europe • New markets / vocations underway • Urban Buses, Refuse Vehicles, Concrete Mixers, Military and ... ?

  8. Converter Dollies • Dramatically reduces effort needed to handle / turn dollies • 2 pivot points instead of 4

  9. New Wide Base Single Tires Are there advantages?

  10. New Wide Base Single Tires There are 2 core advantages and several secondary advantages: • Fuel Savings • Weight Savings

  11. Fuel Savings • Documented, demonstrable fuel savings of 4% when converting from comparable tire types • ie: fuel efficient duals to fuel efficient wide single tires • ie: high mileage tires to high mileage wide single tires • DON’T FORGET THE TRAILER!!! (with one exception presently)

  12. Example: #1 • T/A tractor trailer converted from an 18 wheeler to a 10 wheeler @ 150,000 mi/yr @ 6.0 mpg @$3.90/gal • LP 22.5 energy efficient drive and trailer tires to energy efficient wide base singles = Fuel Savings of $4,970 per vehicle PER YEAR! Comparing Michelin XZA 3 / X One XDA / X One XTA with XZA 3/ XDA 3 / XTA Energy

  13. Example: #2 • T/A tractor trailer converted from an 18 wheeler to a 10 wheeler @ 150,000 mpy @ 6.0 mpg @$3.90/gal • LP 22.5 high mileage drive and trailer tires to high mileage wide base singles = Fuel Savings of $2,778 per vehicle per year Comparing Michelin XZA 3 / X One XDA-HT Plus / X One XTE with XZA 3/ XDA-HT / XTE

  14. Weight Savings • Replacing dual assemblies with wide base single tires delivers significant reduction in unsprung weight • Increased payload = increased revenue

  15. Example #1 • T/A tractor trailer converted from an 18 wheeler to a 10 wheeler • LP 22.5 energy efficient drive and trailer tires to energy efficient wide base singles – all on aluminum wheels = Weight Savings of 768 lbs. per vehicle per year

  16. Example #2 • T/A tractor trailer converted from an 18 wheeler to a 10 wheeler • LP 22.5 high mileage drive and trailer tires to high mileage wide base singles – all on aluminum wheels = Weight Savings of 796 lbs. per vehicle per year

  17. Do they offer any other benefits Improved ride comfort • The new generation of wide base singles dramatically improve spring rate relative to traditional dual fitments • ~15% Improvement (validated by on-board accelerometers) • Improvement in subjective ride quality similar to changing from leaf spring to air ride suspensions

  18. Do they offer any other benefits Improved Handling • Higher cornering stiffness delivers improved handling response • Subjective feel of improved control in curves • Actually lower the center of gravity of a vehicle

  19. Do they offer any other benefits ? 71.5” 0” offset 95.6” 74.6” 2” offset 91.9” Improved Stability • New generation wide base singles increase lateral stability and lower vehicle center of gravity

  20. Do they offer any other benefits Easier Maintenance • One tire to mount vs two • Reduced inventory – tires & wheels • One pressure check per axle end • no more “ignored” inside duals

  21. Do they offer any other benefits Reduced FET $ $ 18 wheeler on LP22.5 $454.14 10 wheeler on 445/50R22.5 $303.74 Net reduction of $150.40 per vehicle

  22. What are the disadvantages? Fewer Miles • Depending on the nature of the application • Low scrub long haul service = +/- 10% • Higher scrub regional/highway service = - 10 to 30%

  23. What are the disadvantages? Flats on the Road • Fleets report fewer flats with new wide base singles • Easier pressure maintenance • 2 extra layers of steel in crown • Different mechanical reaction to penetrating objects When compared to traditional duals

  24. What are the disadvantages? Flats on the Road • Michelin Commercial Truck dealers and many mainstream Travel Plazas like Flying J, Love’s and Pilot are stocking the tires. • Michelin OnCall statistics report only an additional 10 minute average time to complete ERS calls for wide base singles compared to traditional duals.

  25. Are they here to stay ? • Yes ! • The benefits are real and cannot be ignored in today’s competitive environment • reduced fuel consumption • improved ride and handling • weight reduction = increased payload • Michelin North America has committed + $80 Million USD to expanding X One capacity

  26. What’s Next ? • Optimizing vehicle design around the technology

  27. What’s Next ? • Developing new tire technologies that capitalize on the wide base single design

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