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2/29/2012. 2/29/2012. 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
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1. 3/1/2012 New Ultra Low Profile Wide Base Single Tires …or, what we call
X-One
2. 3/1/2012
3. 3/1/2012 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”?
4. 3/1/2012 What are they all about ? The Premise :
To increase the overall productivity of the trucking industry by optimizing the vehicle / tire / wheel configuration.
5. 3/1/2012 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
6. 3/1/2012 Genesis
Conceived in Europe
Developed and tested in the US
Introduced in fall of 2000 at the Great American Truck Show, Dallas, TX In the US, the X One replaces Low Profile 22.5, 11R22.5, or Low Profile 24.5 dual tires, WITHOUT requiring ANY change in vehicle configuration.
In plain language, the X One is completely retrofitable with the above sizes, requiring neither truck redesign nor loss in resale value of the truck/trailer.
The X One IS NOT a “wide base”or a “Super Single” tire. Traditional “wide base or super single tires” are made for low mileage, Regional applications and require significant vehicle redesign. These products are not designed for the rigors of long haul use. Traditional super singles or wide base can be anywhere from 2” to 5” greater in diameter than the X One, greatly increasing the center of gravity of the load.
At time of resale, vehicles may be reverted back to duals, retaining the X One advantage for the fleet. All studs, and other hardware are 100% compatible.
In the US, the X One replaces Low Profile 22.5, 11R22.5, or Low Profile 24.5 dual tires, WITHOUT requiring ANY change in vehicle configuration.
In plain language, the X One is completely retrofitable with the above sizes, requiring neither truck redesign nor loss in resale value of the truck/trailer.
The X One IS NOT a “wide base”or a “Super Single” tire. Traditional “wide base or super single tires” are made for low mileage, Regional applications and require significant vehicle redesign. These products are not designed for the rigors of long haul use. Traditional super singles or wide base can be anywhere from 2” to 5” greater in diameter than the X One, greatly increasing the center of gravity of the load.
At time of resale, vehicles may be reverted back to duals, retaining the X One advantage for the fleet. All studs, and other hardware are 100% compatible.
7. 3/1/2012 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
8. 3/1/2012 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 ... ?
9. 3/1/2012 Converter Dollies Dramatically reduces effort needed to handle / turn dollies
2 pivot points instead of 4
10. 3/1/2012 New Wide Base Single Tires Are there advantages?
11. 3/1/2012 New Wide Base Single Tires There are 2 core advantages and several secondary advantages:
Fuel Savings
Weight Savings
12. 3/1/2012 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)
13. 3/1/2012 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
14. 3/1/2012
15. 3/1/2012 Weight Savings Replacing dual assemblies with wide base single tires delivers significant reduction in unsprung weight
Increased payload = increased revenue
16. 3/1/2012 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
17. 3/1/2012 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
18. 3/1/2012 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
19. 3/1/2012 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
20. 3/1/2012
21. 3/1/2012 Easier Maintenance
One tire to mount vs two
Reduced inventory – tires & wheels
One pressure check per axle end
no more “ignored” inside duals
Do they offer any other benefits
22. 3/1/2012 Do they offer any other benefits Reduced FET
23. 3/1/2012 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%
24. 3/1/2012 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
25. 3/1/2012 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.
26. 3/1/2012 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
27. 3/1/2012 What’s Next ? Optimizing vehicle design around the technology
28. 3/1/2012 What’s Next ? Developing new tire technologies that capitalize on the wide base single design