1. Mercedes-Benz Tires George Krzyzanowski
Product Technical Support Engineer Steering/Wheels/Axle-Links
10/10/2013
Presentation title in CorpoS Regular 9 pt | Department | Date

2. Table of Contents Tire Labeling Tire Labeling Rotated 180°
Tire Construction
Tire Sidewall Specification Breakdown
Mercedes-Benz MO Tires
Vehicle Manufacturer Symbols
Mercedes-Benz MOExtended Tires
Notes on MOExtended Tires
Tire Wear Bar and Maximum Wear Limit
Summer Tires
Winter Tires M+S marking &
Life Cycle & Break In New Tires
George Krzyzanowski / Tires / 10/10/2013

3. Tire Labeling MO
UTQG Rating – Uniform Tire Quality Grade Standards, standardized tread wear, traction and temperature capabilities.
George Krzyzanowski / Tires / 10/10/2013

4. Tire Labeling Rotated 180°
North American Load and Pressure Marking
Tire Line Name
Tire Brand Name
Int’l Compliance Codes
(E.C.E Shown)
US D.O.T Compliance followed by Tire Identification Number
Original Equipment Approval symbol MO
Tire construction Materials
Severe Snow Service Symbol
Construction Type
Mud+Snow
UTQG Rating
Service Description
(Speed Rating)
Tire Size Dimension
(Euro Metric Shown)
(Load Rating)
George Krzyzanowski / Tires / 10/10/2013

5. Tire Construction Tread Area Rib Tread Block Grooves Sipes Shoulder
Cap Plies
Steel Belts
Tread – provides traction and cornering grip for the tire and is designed to resist wear, abrasion and heat.
Tread blocks or lugs are the individual block of tread on the tread area. These contain sipes or narrow voids which improve flexibility of the lug to deform when cornering, and reduces heat build up.
Grooves – or rain grooves, is a design element of the tread pattern specifically arranged to channel water away from the tread area.
Shoulder – is the part of the tire at the edge of the tread as it makes transition to the sidewall.
Cap plies ( Crown plies or belts) – provide the ridged base for the tread.
Radial Plies (Carcass ply) – is the layer above the inner liner and consists of thin textile fiber cords or cables bonded into the rubber. These cables are largely responsible for determining the strength of the tire.
Beads – the bead clamps firmly against the tire’s rim to ensure an airtight fit and keep the tire properly seated on the rim.
TREAD 2 POLYESTER + 2 STEEL + 1 NYLON SIDEWALL 2 POLYESTER The branding in this example identifies that molded into the rubber under the centerline of the tread lies two radial body plies of polyester cord, two belts of angled steel cord and one circumferential cap ply of nylon cord. It also identifies that in each sidewall at the widest points between the tire's inner and outer sidewalls (tire section width) lies two radial body plies of polyester cord (a continuation of the same two body plies that were listed under the centerline of the tread).
Radial Plies
Bead Chaffers
Bead
George Krzyzanowski / Tires / 10/10/2013

6. Tire Sidewall Specification Breakdown
245/40 R18 97V XL 1 2 3 4 5 6 7
Tire Width
Nominal aspect ratio in %
Tire code
Rim Diameter
Load Bearing Index
Speed rating
Extra Load
1 – Tire width shows the nominal tire width in millimeters.
2 – Aspect ratio is the size ratio between the tire height and tire width in percent :Example: 40 Sidewall’s height is approx. 40% of the tire’s width.
3 – The Tire code specifies the tire type, “R” represents Radial construction in this case.
4 – Rim diameter is the diameter of the bead seat, not the diameter of the rim flange. Rim diameter is specified in inches (in).
5 – Load bearing index is a numerical code that specifies the maximum load-bearing capacity of the tire under certain conditions.
6 – Speed rating specifies the approved maximum speed of the tire. Example: V = Speeds up to 149mph.
7 – Extra Load: additional reinforced side wall construction allowing greater load index.
George Krzyzanowski / Tires / 10/10/2013

7. Mercedes-Benz MO Tires
Mercedes Original tires have been
Developed specifically by each tire manufacturer and approved by Daimler AG
Rigorously tested under extreme conditions
Carefully inspected to ensure ultimate quality
Testing done under many different parameters
Test drives under a wide range of conditions
Various road surfaces
Sensitivity testing for comfort on oscillation test bench
Lateral force performance and directional stability
-Michelin, Continental, Pirelli, Dunlop, Bridgestone, Goodyear.
TREAD 2 POLYESTER + 2 STEEL + 1 NYLON SIDEWALL 2 POLYESTER The branding in this example identifies that molded into the rubber under the centerline of the tread lies two radial body plies of polyester cord, two belts of angled steel cord and one circumferential cap ply of nylon cord. It also identifies that in each sidewall at the widest points between the tire's inner and outer sidewalls (tire section width) lies two radial body plies of polyester cord (a continuation of the same two body plies that were listed under the centerline of the tread).
George Krzyzanowski / Tires / 10/10/2013

8. Vehicle Manufacturer Symbols
George Krzyzanowski / Tires / 10/10/2013

9. Mercedes-Benz MOExtended Tires
Extended mobility tires with run-flat characteristic
Self-supporting sidewalls
Comfort-optimized run flat tire
Typical run-flat disadvantages
Increased loading on suspension and body
Reduced ride comfort
Increased rolling resistance
Typical run-flat advantages
Increased emergency range under any loading range
Continue to drive your vehicle even if there is a total loss of pressure on one or more tires.
MOExtended tires may only be used in conjunction with an active tire pressure monitor system and approved DAG wheels.
Disadvantages of MOE tires are increased rolling resistance = decreased mpg fuel consumption.
George Krzyzanowski / Tires / 10/10/2013

10. Notes on MOExtended Tires WIS Document: AH40.10-P-0010-01A
MOExtended distance:
Approx. 50 miles (80km) when vehicle is partially loaded
Approx. 19 miles (30km) when vehicle is fully loaded
Permissible maximum speed:
50 mph (80km/h) must not be exceeded
Repair of damaged MOExtended tires is not permitted
By using TIREFIT the MOExtended running distance can be significantly increased in the event of minor damage
George Krzyzanowski / Tires / 10/10/2013

11. Tire Wear Bar and Maximum Wear Limit
George Krzyzanowski / Tires / 10/10/2013

12. Summer Tires To be used in warm weather conditions.
Temperatures below 45°F (+7°C)
Summer tires lose elasticity significantly, therefore traction and braking distance diminish
Do not store summer tires below 20°F (-7°C) due to compounds may crack.
George Krzyzanowski / Tires / 10/10/2013

13. Winter tires M+S marking &
George Krzyzanowski / Tires / 10/10/2013

14. Life Cycle & Break In New Tires
In this example:
DOT U2LL LMLR5107
Manufactured during 51st week of the year
Manufactured during 2007
US D.O.T Compliance followed by Tire Identification Number
Tires made up of many layers of rubber, steel and fabric, due to these different components, your new tires require a break in period to ensure that they deliver their normal ride quality and maximum performance.
George Krzyzanowski / Tires / 10/10/2013