TABLE OF CONTENTS - OTR Tires

INDUSTRY CODEIDENTIFICATIONINDUSTRY CODE IDENTIFICATION FOR OFF-THE-ROAD TIRESSERVICEC - Compactor ServiceE - Earthmover ServiceG - Grader ServiceL - Loader & Dozer ServiceEARTHMOVER SERVICECode Tread TypePercent Tread DepthE-1 Rib100E-2 Traction100E-3 Rock100E-4 Rock deep tread 150E-7 Flotation80GRADER SERVICECode Tread TypeG-1 RibG-2 TractionG-3 RockG-4 Rock deep treadPercent Tread Depth100100100150LOADER & DOZER SERVICECode Tread TypeL-2 TractionL-3 RockL-4 Rock deep treadL-5 Rock extra deep treadL-3S SmoothL-4S Smooth deep treadL-5S Smooth extra deep treadPercent Tread Depth100100150250100150250COMPACTOR SERVICECode Tread TypeC-1 SmoothC-2 GroovedPercent Tread Depth1001006SUFFIX LETTERS USED BY THE TIRE AND RIM ASSOCIATION IN TIRE SIZE DESIGNATIONS AND THEIR DEFINITIONSSuffix letters are included, when necessary, as part of Tire Size Designations to differentiate between tires for service conditions which may require different loads and inflationsand/or tires and must be used on different types of rims.NHSTGMLDTKNot for highway service.Tractor-Grader tires - Not for highway service.Mining and Logging Tires used in Intermittent Highway Service.Tires primarily for use in sand service.Compactor tire for use on drop center or semi-drop center rims.

TIRE MARKINGSSymbol marking of Radial Ply TiresRadial earthmover tires use a simplified symbol (star) marking system as anindication of minimum recommended inflation for a particular tire load carryingcapacity.Inflation30 mph 50 kph 5 mph 10 kphSymbolPSIBARPSIBARNarrow base 0Wide base : Earthmover (cyclic) applicationsService DescriptionIn addition, these tires are marked with a "Service Description" located near the tiresize marking. This consists of a code which indicates operating limits of loads andspeeds and includes "load indices" for single tire fitment and "speed symbols" whichrelate to these indices (e.g. 202A2/180B).This means that the tire may be used with the following maximum load/speedcombination:202 33,100 lbs/15,000 kg at A2 5 mph/10 kph180 17,600 lbs/8,000 kg at B 30 mph/50 kphThe position of the major tire markings are as shown:1 - Tire section width (mm or inches)2 - Aspect ratio S.H/S.W.3 - Radial construction (R Radial)4 - Rim diameter (inches)5 - Tubeless6 - Goodyear tire name7 - Star marking8 - Load Index/Speed Symbol (Maximum Load/Speed combination)9 - Compound/construction code7

TON-MILE-PER-HOUR-FORMULACALCULATE JOB TMPH REQUIREMENTS FOR EVERY JOBAVOID PREMATURE HEAT RELATED REMOVALS BY INSURING TIRESARE RATED AT OR ABOVE JOB REQUIREMENTS.The TMPH Formula:Multiply the average tire load times the average speed perhour to determine the Ton-Mile-Per-Hour Rating.TMPH Job RateAverage Tire Load x Average Speed for the shiftAverage Tire Load"Empty" tire load in tons "loaded" tire load in tons2Average SpeedRound trip distance in miles x number of tripsTotal Hours (in the shift)SAMPLE TMPH CALCULATION:Conditions:Empty vehicle tire load 20,000 pounds (10.0 tons)Loaded vehicle tire load 34,000 pounds (17.0 tons)Number of Hours Worked 8.0 hoursThe shift hauls 15 loads.Each haul is 9.0 miles, round trip.CALCULATION:Avg. Tire Load Avg. Tire Load 10 Tons 17 Tons227 TonsAvg. Shift Speed Avg. Shift Speed COMPOUND AND CONSTRUCTION COMBINATIONSCompound DescriptionCompound CodeHeat Resistant (HR)2Standard3Standard Cut Resistant (CR)4Ultra Cut Resistant (UCR)6Construction DescriptionConstruction CodeStandardSHeavy DutyHExtra Heavy DutyHWSteel BreakersJHeavy UndertreadULow Angle BeltsSL2 13.5 Tons9 Miles Per Trip x 15 Trips Per Shift8.0 Hours Worked Per Shift135 Miles8.0TON-MILES-PER-HOUR SUMMARYThe Ton-Miles-Per-Hour formula (average tire loadmultiplied by average tire speed), helps you achieveoptimum performance from Goodyear earthmover tires. lthelps you calculate the load-speed-time factor that's withintire temperature limits. Use the TMPH formula to avoidpremature tire removal due to excessive heat.All Goodyear earthmover tires have been assigned aTMPH limit. Earthmover haul jobs operate at variousTMPH rates, depending on the load, distance and timeinvolved in round trips. Thus, each job's haul rate must bedetermined to compare it with each tire's TMPH rate limit.For haul lengths in excess of 20 miles one way, consultyour Goodyear Representative.TKPH (METRIC) Average Load (Metric Tons) x AverageSpeed (Km/h) 16.9 MPHJOB TMPH: 13.5 Tons x 16.9 MPH 228 TMPHCONCLUSION:To avoid heat issues, tires must have a TMPH rating of228 or higher.If the tires on the machine are rated less than 22:Reduce speedReduce loadChange to tires with a higher TMPH ratingNOTE: Each tire position on the machine must becalculated and considered. Position with the highestaverage load should be used.When electronic vehicle monitors are available, Goodyearuses a four hour rolling average TMPH/TKPH to determineSITE requirements.8

WORK CAPABILITY FACTORLOAD AND CARRY DOZER AND LOADERSTHE WCF FORMULAMultiply the average tire load* times the Max. AverageSpeed Per Hour** to determine the Work CapabilityFactor Rating.Goodyear Dozer and Loader tires for use in "Dig andLoad" service and selected on a Tire & Rim Association 5MPH (10 KPH) maximum speed basis. Tire heat build-upin this type of operation is not a factor.* Average Tire Load (empty tire load in tons loaded tireload in tons) 2With the advent of new earthmover operational techniques,loaders are increasingly being used as transport vehicles.When a loader is used to haul material distances greaterthan 50 feet (15 meters), the operation is classified as"Load and Carry." Since this type of service will involvespeeds above 5 MPH (10 KPH) for considerabledistances, tire heat build-up must be taken intoconsideration to insure optimum tire performance.** Maximum Average Speed round trip distance in milesx maximum number of cycles per hour of continuous "Load& Carry" operation.The formula is figured by multiplying the AVERAGE tonload PER TlRE and the MAXIMUM AVERAGE speed ofthe machine PER HOUR.Here is an example: First, determine the AVERAGE TIRELOAD for each tire by adding the empty tire load to theloaded tire load, and dividing by 2.NOTE: Average front tire loads are always greater for frontend loaders than average rear tire loads. Use the highestfront tire average load for the WCF calculation. Equipmentspecifications, or better yet, actual weights may be used.12.9 tons empty 21.7 tons loadedAs with all earthmover tires used in transport service, tireheat build-up is a function of the amount of work the tire isdoing.The increased thickness and higher load carryingrequirements of Dozer and Loader tires necessitates theuse of a tire limitation system - the WORK CAPABILITYFACTOR SYSTEM.The Work Capability Factor rating system provides theguide lines to select the correct Goodyear tire for the jobrequirement. Years of controlled testing and field studieshave culminated in a valid and practical means ofestablishing capabilities of Dozer and loader tires whenused in "Load and Carry" Service.The factors of Load and Speed have long been used forevaluating the limitations of transport tires. For tires usedin transport service on loaders, additional factors such asmore stops, starts and turning must be considered. Theseadditional operational factors produce higher stresses onthe tire components, resulting in increased tire heatbuild-up.211.7 metric tons empty 19.6metric tons loaded2 17.3 Tons Avg.Load 15.7 Metric TonsAvg. LoadThen, determine the MAXIMUM AVERAGE machinespeed: To find this figure, compute the round trip distancein miles, and multiply that number by the maximumnumber of cycles per hour of CONTINUOUS "Load andCarry" operations. Short periods of vehicle downtimeshould not be included in the average speed calculationdue to the relatively slow static cooling rate of D & L tires.400 feet one way 800 feet round trip 0.152 Miles/CycleMilesCycles0.152x 24 3.6 MPH (Max. Avg.)CycleHour125 meters one way 250 meters round trip 0.25KM/CycleKilometersCycles0.25x 24 6 KPH (Max. Avg.)CycleHourNow you have both the Average Tire Load for this job andthe Maximum Average machine speed.9

WORK CAPABILITY FACTORLOAD AND CARRY DOZER AND LOADERSTo find the Work Capability Factor rating required for thisjob, multiply these two numbers:22.5 tons x 5.32 mph 119.7 WCF(21 metric tons x 8.75 Kph 183.75 metric WCF)To find the right tire for the job consult the published WorkCapability Factors for haul lengths of less than 2000 feet(610 meters) one way that have been established for eachsize and type of Goodyear Dozer and Loader tire, andselect the tire whose WCF rate meets or exceeds the JobWCF requirement. If you have a multiple choice of tireswhose WCF rate is more than the job requires, alwaysselect the tire with the lowest rate which will meet therequirement.The Work Capability Factor requirement figure may bepredetermined for any "Load and Carry" job involvingDozer and Loader tires by using this formula. If the jobrequires a higher WCF rating than that of the tires you arenow using, you should either (a) replace the tires withhigher rated types, or (b) reduce either speed or loadfactors to bring the WCF rating within acceptable limits forthe tires.Obviously, at extreme loads and haul distance, the WCFformula will no longer apply. Vehicies with tires loaded at15% above their rated capacity or used on hauls of morethan 2,000 feet (610 meters) one way - cannot qualify forWCF calculations. For haul lengths in excess of 2,000 feet(610 meters) one way, consult your Goodyearrepresentative.Example of WCF Application - for established job siteplanning a "Load & Carry" operation1. Conditions:Front Tire Loads - Empty 25,800#AVG 17.3 tonsLoaded 43,400#2. Tire on Loader: 35/65R33 (L-5) WCF 803. Determination of Maximum Allowable Average Speed:80 WCF 4.6 MPH17.3 Tons4. Determination of Maximum Number of Cycles per Hour:CyclesFeetMile4.6 MPH x 800x1HourCycle5280 FeetCyclesHour4.6 MPH x 5280 Feet/Mi800 feet/cycle 30 Cycles/HourMaximumExample of WCF Application (metric).1. Conditions:Front Tire Loads - Empty 11,700 Kg.Loaded 19,600 Kg.AVG 15.7metric tons2. Tire on Loader: 35/65R33 (L-5) WCF 116 metric3. Determination of Maximum Allowable Average Speed:116 metric WCF 7.4 KPH15.7 metric tons4. Determination of Maximum Number of Cycles per Hour:CyclesMetersKilometer7.4 KPH x 250x1HourCycle1000 MetersCyclesThe WCF formula helps you select the right Dozer andLoader tires for the job - before you buy. lt's anothercustomer service at Goodyear, producers of the industry'sWork Capability Factor rated Dozer and Loader tires. Hour 7.4 KPH x 1000 M/Km250 M/Cycle 30 Cycles/HourMaximum10

MIXING OF BIAS AND RADIAL TIRES ON A VEHICLESAME AXLE on any vehicle - Bias and radial tires must not be mixed on the same axle of any vehicle (drive, steer or trail).Haul Trucks - When mixing tire constructions, radial tires should be used only on the front/steer axle and bias tires should be used only on the rear/drive axle.Loaders, Container Handlers, Reach Stackers, Forklifts - Bias tires can be used on one axle and radials on the other axle.Graders - Bias or radial tires can be used on the front axle. Bias or radial tires can be used on the rear axles.NOTE: The tandem axles must have tires of the same construction - all radial tires or all bias tires.Articulated Dump Truck (ADT) - Do not mix bias and radial tires on an ADT. Radial tires are recommended.Scrapers - Mixing of bias and radial tires is not recommended. Use only bias tires or only radial tires.Mobile Cranes - Due to differences in cornering force characteristics and spring rates, the best tire and vehicle performance will be obtained by applying tires of the same sizeand construction (radial ply or bias ply) to all vehicle wheel positions. However, different tire constructions are permitted on the steer, drive, and trailer axles of two-axle, tandem,and multiple-axle combinations when the following rules are observed.Never mix different tire sizes or tire constructions on the same axle.If radials are mixed with bias tires, the best handling will be obtained with the bias tires on the steer axle.Bias or radial tires may be used on either axle of two-axle vehicles, providing the vehicle has dual rear wheels or is equipped with Super Single wide-base tires.Either bias or radial tires may be used on the steering axle of vehicles with three or more axles. Either all bias or all radial tire should be used on the nonsteering axles.Never mix bias and radial tires in a tandem or multiple axle combination.Always check with the vehicle manufacturer before changing tire size or tire construction on any vehicle. Carefully evaluate performance changes caused by tire size or tireconstruction changes before putting the vehicle back into service.Other vehicle types - Contact the vehicle and tire manufacturer for tire mixing options.NOTE: Ton Mile Per Hour (TMPH) and Work Capability Factor (WCF) must be considered for proper fitment to all positions.11

COMPARATIVESIZE CHARTConventionalEnglishMetricWide BaseEnglishMetricSTAR RATING/PLY RATINGEQUIVALENTS65 SeriesEnglishMetricServiceTire 25Earthmover 5R2540.00*49.5***Notes:(1) * Not available(2) Tire widths are only listed for 7.5R3940.5/75R39Star RatingCorrespondingPly Rating ******************Up to 30Up to 26Up to 32Up to 32Up to 36Up to 38Up to 44Up to 44Up to 48Up to 48Up to 54Up to 60Up to 66Up to 70Up to 78Up to 80Up to 16Up to 24Up to 16Up to 28Up to 32Up to 20Up to 30Up to 24Up to 34Up to 26Up to 38Up to 34Up to 38Up to 46Up to 46Up to 48Up to 48Up to 54ServiceTire SizeStar RatingCorrespondingPly Rating Eq.Grader13.00R2414.00R2416.00R24***Up to 14Up to 16Up to 18Loader14.00R24************************Up to 18Up to 28Up to 14Up to 16Up to 22Up to 20Up to 24Up to 24Up to 22Up to 26Up to 28Up to 26Up to 30Up to 42Up to 32Up to 36Up to 36Up to 46Up to 5/65R4512

HISTORIC TIRE NOMENCLATUREBY ALPHA NUMERIC NAMES, PREVIOUS NAMES AND INDUSTRY CODEHAULAGE TIRES FOR TRUCKS AND SCRAPERSDOZER/LOADER TIRES FOR WORK MACHINESALPHA NUMERICNAMESALPHA NUMERIC PREVIOUSNAMESNAMESPREVIOUSNAMESINDUSTRYCODEBIAS CONSTRUCTION - CONVENTIONAL SIZESHRR-1AHard Rock RibXDR-1AExtra Duty RibSGL-2AEarthmover Sure GripHRL-3AHard Rock LugHRL-3BHard Rock Lug 8HRL-3CHard Rock Lug 8RWRL-3AHard Rock Lug Xtra WallHRL-4AHard Rock Lug XTHRL-4BHard Rock Lug XT-8MRL-4B, FHard Rock Lug XT-8MEAW-7AEarthmover All WeatherSHY-7ASemi Highway 5 RibE-1E-1E-2E-3E-3E-3E-3E-4E-4E-4E-7E-7BIAS CONSTRUCTION - WIDE BASE SIZESSGL-2ASure Grip LugHRL-3ASuper Hard Rock LugHRL-3BSuper Hard Rock Lug 8HRL-3FEAW-7AEarthmover All WeatherE-2E-3E-3E-3E-7BIAS CONSTRUCTION - WIDE BASE SIZESSGL D/L-2ASure Grip LoaderSGL D/L-2ASure Grip Lug DLELV-3AHRL D/L-3ASuper Hard Rock LoaderHRL D/L-3ASuper Hard Rock Lug DLHRL D/L-3BSuper Hard Rock Lug 8 DLHRL D/L-3CHRL D/L-4ASuper Hard Rock Lug XT DLHRL D/L-4GHRL D/L-4/15CHRL D/L-5ASuper Xtra Tread DLHRL D/L-5ASuper Xtra Tread DLHRL D/L-5BSuper Xtra Tread II -4L-5/G-5L-5L-5BIAS BELTED CONSTRUCTION - 65 ASPECT RATIO SIZESNRL D/L-4ANYLOSTEEL Xtra Tread DLL-4NYLOSTEELSuperXtraTreadNRL D/L-5AL-5DLSEVERE SERVICE- UNDERGROUND MINE ANDQUARRY TIRESALPHA NUMERICNAMESPREVIOUSNAMESBIAS CONSTRUCTION - CONVENTIONAL SIZESHRL-3AHard Rock Lug UMSAMS-4/5A5:1 solid to void ratioSMO-4BSmoothAMS-5/8F8:1 solid to void ratioAMS-5/11F11:1 solid to void ratioAMS-5/15C15:1 solid to void ratioSMO-5A, B, CSmoothBIAS CONSTRUCTION - WIDE BASE SIZESSMO D/l-3ASmoothSMO D/L-4A, BSmoothAMS D/L-5/8H8:1 solid to void ratioAMS D/L-5/9A9:1 solid to void ratioAMS, DMS D/L-4/15C 15:1 solid to void ratioAMS, DMS D/L-4/15C 15:1 solid to void ratioDRL D/L-5ASuper Xtra Dual TreadSMO D/L-5A, BSmoothSMO D/L-5A, L-5L-5L-4L-5L-5L-5S/G-5SL-5SGRADER TIRESOTHER TIRESALPHA NUMERICNAMESPREVIOUSNAMESCONVENTIONAL SIZESSMC-1ASmooth CompactorRTS-1ATrib Tow ServiceMC-1AMobile Crane ServiceINDUSTRYCODEC-1SAND TIRESALPHA NUMERICNAMESPREVIOUSNAMESBIAS CONSTRUCTION - CONVENTIONAL SIZESSAW-7ASand All WeatherSRB-7ASand RibSRB-7A, 7BSpecial Sand & Road ServiceINDUSTRYCODEE-7E-7E-7ALPHA NUMERIC PREVIOUSNAMESNAMESBIAS CONSTRUCTION - CONVENTIONAL SIZESRBG-1ARib GraderASG-2AAll Service GraderSGG-2ASure Grip GraderSGL D/L-2ASure Grip Lug GraderHRL D/L-3ASuper Hard Rock Lug GraderRKG-3ARock GraderRKG-3CRock GraderSGG-4BHRL D/L-5ASuper Xtra Tread DLSMO D/L-5A, BSmoothAWG-1AAll Weather GraderSMG-1ASmooth L-5/G-5L-5S/G-5SBIAS BELTED CONSTRUCTION - 65 ASPECT RATIO SIZESNRL, NDL D/L-4/15C15:1 solid to void ratioL-4NSM D/L-4BSmoothL-4SNRL, NDL D/L-5/15C15:1 solid to void ratioL-5NSM D/L-5BSmoothL-5SPORT & CONTAINER HANDLING TIRESALPHA NUMERICNAMESBIAS ELV-5DINDUSTRYLEVEL10015015015025025025013

CONVERSION FACTORSFOR DIMENSIONAL DATADimensional DataUnitsRounded off toConversion FactorMinimum Dual Spacinginsmmto closest 0.1 unitto closest unit(ins x 25.4)lbs/in2barsto closest 5 unitsto closest 1/4 bar(lbs/in2 x 0.06895)lbskgsto closest 10 unitsto closest unit(lbs x 0.4536)insmmto closest 0.1 unitto closest unit(ins x 25.4)insmmto closest 0.1 unitto closest unit(ins x 25.4)insmmto closest 0.1 unitto closest unit(ins x 25.4)insmmto closest 0.1 unitto closest unit(ins x 25.4)rev/mirev/kmto closest unitto closest unit(rev/mi x 0.6214)ins 2cm2to closest unitto closest unit(ins 2 x 6.452)lbskgto closest unitto closest unit(lbs x 0.4536)rmphkphto closest unitto closest unit(mph x 1.609)32nds/inmmto closest unitto closest unit(32nds x 0.7938)TMPHTKPHto closest unitto closest unit(TMPH x 1.458)YD 3M3to closest 0.1 unitto closest unit(YD3 x 0.76456)InflationLoadOverall WidthOverall DiameterLoaded Section Gr.Static Loaded RadiusRevolutionsGross Contact AreaWeightSpeedTread DepthPerformance CapabilityCapacity14

TIRE DIMENSIONS15Size Definitions (examples)Listed here are examples of some of the popular size designations for earthmover tires. With each size is an explanation of what each component of the sizedescribes:18.00R25Section widthin inchesR (Radial), - (Bias)Rim diameterin inches23.5R25Section wi

For current availability of specific sizes and types of tires contact your Goodyear Representative. Construction All tires are reinforced with nylon cords, except Unisteel Radial Ply tires, which are reinforced with steel cords. Dimensional Data Dimensions of tires are for tires on design rims.