TREAD DESIGNS RADIAL AND BIAS

COLORADO OTR LP TABLE OF CONTENTS INTRODUCTION 3 Industry Standard 3 Application Vehicle Matching Chart 3 GENERAL INFORMATION 4 Structural Diagrams - Radial Tire 4 Definitions 5 Classifications 7 Uses and Characteristics of Off-The-Road (OTR) Tires 7 TRA Classification and Corresponding Colorado Off-The-Road Tires 8 Rubber Compound Codes 8 Tire Families/Design Tread-Depth 9 Tire Markings 10 Type of Tire Size Designation 10 Dual Specification Codes 11 TREAD DESIGNS RADIAL AND BIAS Dimensional and Inflation Data 12 2 2 Earthmover Tread Designs (Radial) Earthmover Tread Designs (Bias) 12 17 TABLES 22 Load Index 22 Table of contents Conversion Table: Star Rating to Ply Rating Pressure Conversion Chart Tread Depth Conversion Chart FITMENT GUIDE 24 25 26 27

www.coloradootr.com INTRODUCTION Industry Standard Colorado Tire has developed a wide range of tire patterns and specifications, so that the proper Off-The-Road (OTR) tire can be matched to any vehicle, service, or operating condition. Colorado OTR tires are designed and manufactured to meet the commonly accepted international standards set by the TRA (Tire and Rim Association) in the U.S.A., by the ETRTO (European Tire and Rim Technical Organization) in Europe, and/or by the JATMA (Japan Automobile Tire Manufacturers Association) in Japan*. The following measurements strictly follow these standards: Load capacities, inflation pressures, dimensions (such as overall tire diameter and width), as well as the relative rim and tube valves. If a tire is to be used for a purpose other than that for which it is originally intended, please consult Colorado OTR, LP for reference on application and use. Application Vehicle Matching Chart APPLICATION Earthmover Service Loader & Dozer Service VEHICLE Dump Trucks, Motor Scrapers, Articulated Dump Trucks, Coal Haulers, Logging Trucks, Other Mining Trucks, etc. Shovels, Front-End Loaders, Back-hoe Loaders, Skid Steer Loaders, Dozers, Shuttle Trucks, Load- Haul-Dumps, etc. 3 Introduction

COLORADO OTR LP GENERAL INFORMATION Structural Diagrams - Radial Tire TREAD TREAD BELTS BODY PLYS TURN-UP PLY INNER LINER BEAD CHAFER (FILLER) SIDEWALL BEAD BUNDLE Structural Diagrams - Bias-Ply Tire 4 4 TREAD TREAD BELTS General Information INNER LINER BODY PLYS BEAD BUNDLE

www.coloradootr.com DEFINITIONS 2.1 Tire Size - The size of each tire is indicated by nominal width and rim diameter in inches and mm. Radial structure is indicated by the letter R. For some tires the aspect ratio is indicated by percentage. Example Radial Tire 40.00R57, 33.25R35, 445/95R25 Bias Tire 30.00-51, 45/65-45 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 Star Rating, Ply Rating and Load Index - The load capacity of a tire is indicated by the star rating (in case of a radial tire) and the ply rating (in case of a bias tire). *The load index is applied in countries where the ETRTO standards are used. Overall Diameter (OD) - Overall Diameter is twice the section height of a new tire, plus the normal rim diameter, and including 24-hour inflation growth. Overall Width (OW) - Overall Width is the width of a new tire, including 24-hour inflation growth, and including protective side ribs bars or decorations. Section Width (SW) - Section Width is the width of a new tire, including 24-hour inflation growth and normal sidewalls; BUT, not including protective side ribs, bars, or decorations. Static Loaded Radius and Width (SLR, SLW) - Static Loaded Radius is the shortest distance from the axle center to the contact surface of a tire. Static Loaded Width is the overall width of a tire mounted on the approved rim at the specified inflati on pressure, placed still and vertically on a flat board, and loaded with the specified load. Original Tread Depth (OTD) - Original Tread Depth is the tread depth of a new tire measured at the point of the tread-indicator (where available); OR, one-fourth the width of the tire crown section from the crown center, and including 24-hour inflation growth. Section Height (SH) - Section Height is the distance from the heel of the bead to the crown section of the tire, and includes the original tread depth. Aspect Ratio Aspect Ratio is represented as a percentage to determine the Section Height. Speed Rating - Speed Rating is represented by an alpha symbol on the sidewall and is defined as the maximum continuous speed allowed for a pre-determined period of one hour. Ton Kilometer per Hour (TKPH) - Ton Kilometer per hour is a formulated representation of the amount of work that is applied to a tire over a specified period of one hour. 5 Definitions

COLORADO OTR LP 2.12 2.12 TKPH Formula - To calculate TKPH the following formula applies: TKPH Work Rate Average Tire Load X Average Speed per Shift Average Tire Load Empty Tire Load in Tons + Loaded Tire Load in Tons 2 Average Speed Cycle Distance in Km X Number of Cycles per Shift Hours per Shift The TKPH formula will ensure optimum performance from OTR Tires. This formula MUST be adhered to. Failure to do so will result in premature failure of the tire due to excessive heat buildup. To avoid excessive heat buildup, a tire with a TKPH rating that is higher than that of the work rate calculated must be selected. Each tire position on the machine must be calculated and considered individually. A position with the highest average tire load should be selected. For imperial measurements; Ton Mile per Hour (TMPH): the formula remains the same, noting (TMPH) figures must be selected from the (TKPH)-(TMPH) data fields. *Any tire or tires found to be working outside of their recommended TKPH-TMPH will NOT be subject to manufacturer s warranty. 6 6 Definitions

www.coloradootr.com GENERAL INFORMATION (cont.) Classifications Uses and Characteristics of Off-The-Road (OTR) Tires The characteristics which OTR tires possess differ somewhat according to the function they must serve and the type of vehicles on which they are mounted. Application Vehicle Matching Chart Type/Service Tire Characteristics VEHICLE Heat-Resistance Cut-Resistant Earthmover Wear-Resistant Shock Burst-Resistant Loader & Dozer Cut-Resistant Wear-Resistant 7 General Information

COLORADO OTR LP TRA Classification and Corresponding Colorado Off-The-Road Tires Off-The-Road tires are classified by the TRA as shown in the chart below. Names of the corresponding tread patterns as related to Colorado OTR Tires are also shown below: TRA Classification Tread Type Colorado OTR Tread Pattern Radial Bias E-4 Rock CR1T CB1T E-4 Rock CR2T CB2T/CB3T L5 Extra Deep Tread -TBA- CB1L/CB2L L5S Deep Tread Slick -TBA- CB3L Rubber Compound Codes Service Code Number Structure Earthmover (E) AR CR HR Standard Cut-Resistant Heat-Resistant Loader & Dozer (L) CR Cut-Resistant 8 8 General Information

www.coloradootr.com Tire Families There are 3 primary earthmover tire families which are categorized by the aspect ratio H/S (The ratio between the sidewall and the height and the tire width). 100 SERIES OR STANDARD TIRE H/S : 1.00 H S The H/S aspect ratio is approximately equal to 1.00 The section width, given in inches, is to 2 decimal places. e.g. 18.00R33 80 SERIES OR WIDE BASE H/S : 0.80 H S The H/S aspect ratio is approximately equal to 0.80 The section width, given in inches, is a whole number followed by a fraction. e.g. 20.5R25 Or the section width is given in inches followed by the number 80. e.g. 59/80R63 65 SERIES H/S : 0.65 H S The H/S aspect ratio is approximately equal to 0.65 The section width is given in inches or in millimeters followed by the number 65. e.g. 35/65-33 Design Tread-Depth N 1.5N 2.5N 9 E-2 / E-3 L-2 / L-3 E-4 L-4 / L-4S L-5 / L-5S TRACTION, ROCK ROCK, DEEP TREAD ROCK, EXTRA DEEP TREAD N 1.5N 2.5N General Information

COLORADO OTR LP Tire Markings 4 1 1 Colorado Brand Name 2 Colorado Specification Codes 3 Serial Number 3 4 Tire Size, Star Rating, and Type 2 Type of Tire Size Designation Regular 27.00 R 49 Star Rating Rim Diameter (inches) Radial Structure Section Width (inches) 10 10 General Information Wide Base Super Wide Base 27.00 40 / R 49 Star Rating Rim Diameter (inches) Radial Structure Section Width (inches) 65 39 30PR Ply Rating Rim Diameter (inches) Aspect Ratio 65 Series Section Width (inches)

www.coloradootr.com Dual Specification Codes Combination Construction Size Designation Loader & Dozer Service + Earthmover Service Radial Bias TBA Loader & Dozer Service + Grader Service Earthmover Service + Grader Service Bias Radial TBA TBA *Multiple Star Rating Colorado Tires marked with LOADER & DOZER * (one star) and EARTHMOVER ** (two star) have specified load capacity on each servicing condition. The strength of the tire casing is designed to constrain inflation pressure used. (26.5R25 is used as an example) Type of Service Star Rating Inflation Pressure Load (Load Index) Speed (Speed Symbol) Loader *(one star) 5.25 bar 15,000 (202) 10 km/hour (A2) Earthmover **(two star) 5.00 bar 11,500 (190) 50 km/hour (B) 11 General Information

COLORADO OTR LP TREAD DESIGNS RADIAL AND BIAS Dimensional and Inflation Data EARTHMOVER TREAD DESIGNS (RADIAL) CR1T RADIAL TRUCK TIRE DIMENSIONAL DATA 12 12 CR1T Tire Size TRA Code Ply Rating Original Tread Depth 32nd mm TKPH Recommended Rim Width / Flange Height 59/80R63 E4 ** 120 95 2188 44.00/5.0 53/80R63 E4 ** 120 95 1544 36.00/5.0 50/90R57 E4 ** 120 95 1498 32.00/6.5 50/80R57 E4 ** 120 95 1382 34.00/5.0 40.00R57 E4 ** 112 89 1238 29.00/6.0 37.00R57 E4 ** 112 89 1060 27.00/6.0 Minimum Dual Spacing (inches / mm) 70 /1,780 63 /1,618 61.5 /1,562 61.5 /1,562 54.7 /1,389 48.5 /1,232 Static Loaded Radius (inches / mm) 68.4 /1,737 64.5 /1,638 66.0 /1,676 63.5 /1,612 61.8 /1,567 61.5 /1,562 ( / ) 11,200 /5,091 10,050 /4,568 10,200 /4,636 10,200 /4,636 7,450 /3,386 6,900 /3,136 Maximum Load () Pressure (kpa) @ 10 km/h @ 50 km/h - 101,600/600-88,030/700-78,000/700-77,290/700-60,000/700-51,500/700 Inflated Dimensions (inches / mm) Section Width 59.2 /1,503 52.7 /1,338 49.8 /1,266 49.6 /1,262 44.1 /1,121 40.9 /1,039 Overall Diameter 159.1 /4,026 125.6 /3,780 150.5 /3,809 142.3 /3,600 142.0 /3,594 136.3 /3,449

www.coloradootr.com RADIAL TIRE LOAD INFLATION TABLE Tire Load Limits at Various Cold Inflation Pressures Based on 30 mph / 50 kph Maximum Speed Tire Size KPA PSI Star Rating 450 65 475 69 500 73 525 76 550 80 575 83 600 87 625 91 650 94 675 98 700 102 800 116 59/80R63 2 Star 81,900 180,000 85,200 188,000 88,600 195,000 91,900 203,000 95,200 210,000 98,400 217,000 101,600 224,000 53/80R63 2 Star 67,050 147,800 69,800 153,900 72,550 160,000 75,250 165,900 77,950 171,800 80,500 177,600 83,200 183,400 85,010 187,447 88,030 194,106 50/90R57 2 Star 78,000 171,600 50/80R57 2 Star 77,290 170,038 40.00R57 2 Star 42,500 93,500 45,000 99,000 46,250 102,000 48,750 107,500 50,000 110,000 51,500 113,500 53,000 117,000 54,500 120,000 56,000 123,500 58,000 128,000 60,000 132,500 37.00R57 2 Star 51,500 113,300 **NOTE THAT ALL SPECIFICATIONS ARE BASED ON THE HEAT-RESISTANT (HR) COMPOUND. STANDARD AND CUT-RESISTANT TBA 13 CR1T

COLORADO OTR LP EARTHMOVER TREAD DESIGNS (RADIAL) CR2T RADIAL TRUCK TIRE DIMENSIONAL DATA Tire Size TRA Code Ply Rating Original Tread Depth 32nd mm TKPH Recommended Rim Width / Flange Height Minimum Dual Spacing (inches / mm) Static Loaded Radius (inches / mm) ( / ) Maximum Load () Pressure (kpa) @ 10 km/h @ 50 km/h Inflated Dimensions (inches / mm) Section Width Overall Diameter 14 14 53/80R63 E4 ** 120 95 1574 36.00/5.0 40.00R57 E4 ** 112 89 1266 29.00/6.0 37.00R57 E4 ** 112 89 1060 27.00/6.0 36.00R51 E4 ** 102 81 750 26.00/5.0 33.00R51 E4 ** 100 80 714 24.00/5.0 30.00R51 E3 ** 57 45 536 22.00/4.5 27.00R49 E4 ** 81 65 500 19.50/4.0 63.7 /1,618 54.7 /1,389 48.5 /1,232 46.6 /1,184 45.1 /1,146 39.1 /993 35.1 /892 64.2 /1,630 62.0 /1,575 60.1 /1,526 55.7 /1,415 53.1 /1,350 51.0 /1,295 47.6 /1,208 10,050 /4,568 7,450 /3,386 6,900 /3,136 5,500 /2,500 4,450 /2,022 3,600 /1,636 3,140 /1,427-88,030/700-60,000/700-51,500/700-46,250/700-38,750/700-33,500/525 27,250/700 52.7 /1,338 44.3 /1,125 40.2 /1,021 39.3 /939 35.2 /895 33.5 /853 29.3 /743 125.6 /3,780 142.0 /3,594 136.3 /3,449 127.7 /3,231 121.0 /3,060 104.7 /2,650 106.8/ 2,703 CR2T

www.coloradootr.com RADIAL TIRE LOAD INFLATION TABLE Tire Load Limits at Various Cold Inflation Pressures Based on 30 mph / 50 kph Maximum Speed Tire Size KPA PSI Star Rating 450 65 475 69 500 73 525 76 550 80 575 83 600 87 625 91 650 94 675 98 700 102 800 116 53/80R63 2 Star 67,050 147,800 69,800 153,900 72,550 160,000 75,250 165,900 77,950 171,800 80,500 177,600 83,200 183,400 85,010 187,447 88,030 194,106 40.00R57 2 Star 42,500 93,500 45,000 99,000 46,250 102,000 48,750 107,500 50,000 110,000 51,500 113,500 53,000 117,000 54,500 120,000 56,000 123,500 58,000 128,000 60,000 132,500 37.00R57 2 Star 51,500 113,300 36.00R51 2 Star 33,500 74,000 35,500 78,000 36,500 80,500 37,500 82,500 38,750 85,500 40,000 88,000 41,250 91,000 42,500 93,500 43,750 96,500 45,000 99,000 46,250 102,000 33.00R51 2 Star 27,500 60,000 29,000 64,000 30,000 66,000 30,750 68,000 32,500 71,500 33,500 74,000 34,500 76,000 35,500 78,500 36,500 80,500 37,500 82,500 38,750 85,500 30.00R51 33,500 73,700 27.00R49 2 Star 19,500 43,000 20,000 44,100 20,600 45,400 21,800 48,100 22,400 49,400 23,000 50,700 23,600 52,000 25,000 55,100 25,750 56,800 26,500 58,400 27,250 60,000 **NOTE THAT ALL SPECIFICATIONS ARE BASED ON THE HEAT-RESISTANT (HR) COMPOUND. STANDARD AND CUT-RESISTANT TBA 15 CR2T

COLORADO OTR LP EARTHMOVER TREAD DESIGNS (RADIAL) CR3T RADIAL TRUCK TIRE DIMENSIONAL DATA Tire Size TRA Code Ply Rating Original Tread Depth 32nd mm TKPH Recommended Rim Width / Flange Height Minimum Dual Spacing (inches / mm) Static Loaded Radius (inches / mm) ( / ) Maximum Load () Pressure (kpa) @ 10 km/h @ 50 km/h Inflated Dimensions (inches / mm) Section Width Overall Diameter 16 16 36.00R51 E4 ** 102 81 750 26.00/5.0 46.6 /1,184 RADIAL TIRE LOAD INFLATION TABLE 57.8 /1,468 5,500 /2,500-46,250/700 39.3 /939 127.7 /3,231 Tire Load Limits at Various Cold Inflation Pressures Based on 30 mph / 50 kph Maximum Speed Tire Size KPA PSI Star Rating 450 65 475 69 500 73 525 76 550 80 575 83 600 87 625 91 650 94 675 98 700 102 800 116 36.00R51 2 Star 33,500 74,000 35,500 78,000 36,500 80,500 37,500 82,500 38,750 85,500 40,000 88,000 41,250 91,000 42,500 93,500 43,750 96,500 45,000 99,000 46,250 102,000 CR3T

www.coloradootr.com EARTHMOVER TREAD DESIGNS (BIAS) CB2T BIAS TRUCK TIRE DIMENSIONAL DATA Tire Size TRA Code Ply Rating Original Tread Depth 32nd mm TKPH Recommended Rim Width / Flange Height Minimum Dual Spacing (inches / mm) Static Loaded Radius (inches / mm) ( / ) Maximum Load () Pressure (kpa) @ 10 km/h @ 50 km/h Inflated Dimensions (inches / mm) Section Width Overall Diameter 59/80-63 E4 88 120 95 1485 44.00/5.0 73.0 /1,854 68.9 /1,750 11,000 /5,000-111,000/700 57.8 /1,469 159.1 /4,026 53/80-63 E4 86 111 88 980 36.00 / 5.0 40.00-57 E4 60 104 83 800 29.00 / 6.0 61/ 1,551 51.6 /1,311 63.9 /1,623 64.5 /1,638 9,500 /4,310 7,445 /3,378-92,500/700-54,500/550 51 /1,300 43.0 /1,092 149.4 /3,780 142.0 /3,593 17 37.00-57 E4 68 104 83 700 27.00/6.0 48.5 /1,231 60.8 /1,544 6,600 /3,000-51,500/525 40.1 /1,018 40.1 /1,018 36.00-51 E4 58 111 88 680 26.00 / 5.0 46.6 /1,184 58.8 /1,494 5,441 /2,469-41,250/525 40.0 /1,016 40.0 /1,016 27.00-49 E4 48 82 65 460 19.50 / 4.0 35.1 /893 48.4 /1,229 2,712 /1,230-25,000/575 29.0 /737 105.9 /2,680 CB2T

COLORADO OTR LP BIAS LOAD INFLATION TABLE Tire Size 59/80-63 53/80-63 40.00-57 37.00-57 36.00-51 27.00-49 KPA PSI Ply Rating 88 ply 86 Ply 60 ply 68 ply 58 ply 48 ply 400 58 20,600 45,400 Tire Load Limits at Various Cold Inflation Pressures Based on 30 mph / 50 kph Maximum Speed 425 62 21,200 46,700 450 65 48,750 107,500 37,500 82,500 21,800 41,800 475 69 50,000 110,000 38,750 85,500 22,400 49,400 500 73 51,500 113,500 40,000 88,000 23,000 50,700 525 76 53,000 117,000 51,500 113,538 41,250 91,000 23,600 52,000 550 80 54,500 120,000 24,300 53,600 575 83 25,000 55,100 600 87 625 91 650 94 700 102 111,000 244,713 92,500 203,928 825 120 **NOTE THAT ALL SPECIFICATIONS ARE BASED ON THE HEAT-RESISTANT (HR) COMPOUND. STANDARD AND CUT-RESISTANT TBA 18 18 CB2T

www.coloradootr.com LOADER TREAD DESIGNS (BIAS) CB1L BIAS TRUCK TIRE DIMENSIONAL DATA Tire Size TRA Code Ply Rating Original Tread Depth 32nd mm TKPH Recommended Rim Width / Flange Height Minimum Dual Spacing (inches / mm) Static Loaded Radius (inches / mm) ( / ) Maximum Load () Pressure (kpa) @ 10 km/h @ 50 km/h Inflated Dimensions (inches / mm) Section Width Overall Diameter 70/70-57 L4 84 122 97-60.00/6.0-71.7 /1,821 14,710 /6,686 - - 74.2 /1,884-58/85-57 L4 84 122 97-46.00/6.0-68.7 /1,745 12,780 /5,809 - - 55.9 /1,419-19 BIAS LOAD INFLATION TABLE Tire Size KPA PSI Ply Rating 400 58 Tire Load Limits at Various Cold Inflation Pressures Based on 30 mph / 50 kph Maximum Speed 425 62 450 65 475 69 500 73 525 76 550 80 575 83 600 87 625 91 650 94 700 102 825 120 70/70-57 88 ply TBA - - - - - - - - - - - - 58/85-57 86 Ply TBA - - - - - - - - - - - - CB1L

COLORADO OTR LP LOADER TREAD DESIGNS (BIAS) CB2L BIAS TRUCK TIRE DIMENSIONAL DATA Tire Size TRA Code Ply Rating Original Tread Depth 32nd mm TKPH Recommended Rim Width / Flange Height Minimum Dual Spacing (inches / mm) Static Loaded Radius (inches / mm) ( / ) Maximum Load () Pressure (kpa) @ 10 km/h @ 50 km/h Inflated Dimensions (inches / mm) Section Width Overall Diameter 20 20 52/80-57 L4 68 122 97-36.00/6.0-50/80-57 L4 68 122 97-36.00/6.0-70.7 /1,795 70.5 /1,790 TBA 82,500/600 - TBA 77,500/600-51.9 /1,320 51.2 /1,300 142.0 /3,594 141.6 /3,583 BIAS LOAD INFLATION TABLE CB2L Tire Size 52/80-57 50/80-57 zz` KPA PSI Ply Rating 475 69 84 ply TBA 84 Ply TBA Tire Load Limits at Various Cold Inflation Pressures Based on 30 mph / 50 kph Maximum Speed 500 73 69,000 152,000 67,000 147,500 525 76 73,000 16,100 69,000 152,000 550 80 75,000 165,500 71,000 156,000 575 83 77,500 171,000 73,000 161,000 600 87 80,000 176,500 75,000 165,500 650 94 675 96 700 102 725 105 750 109 775 112 850 123

www.coloradootr.com LOADER TREAD DESIGNS (BIAS) CB3L BIAS TRUCK TIRE DIMENSIONAL DATA Tire Size TRA Code Ply Rating Original Tread Depth 32nd mm TKPH Recommended Rim Width / Flange Height Minimum Dual Spacing (inches / mm) Static Loaded Radius (inches / mm) ( / ) Maximum Load () Pressure (kpa) @ 10 km/h @ 50 km/h Inflated Dimensions (inches / mm) Section Width Overall Diameter 50/65-51 L5 62 157 125-40.00/4.5-60.2 /1,536-63,000/650-50.0 /1,270 120.9 /3,061 45/65-45 L5 58 149 118-36.00/4.5-35/65-33 L5 42 126 100-28.00/3.5-53.8 /1,366 40.9 /1,038-51,250/650 - - 26,500/600-45.0 /1143 35.0 /889 108.0 /2,733 82.1 /2,077 21 BIAS LOAD INFLATION TABLE Tire Size KPA PSI Ply Rating 475 69 Tire Load Limits at Various Cold Inflation Pressures Based on 30 mph / 50 kph Maximum Speed 500 73 525 76 550 80 575 83 600 87 650 94 675 96 700 102 725 105 750 109 775 112 850 123 50/65-51 45/65-45 35/65-33 62 ply 58 Ply 42 Ply 53,000 117,000 41,250 91,000 22,400 49,400 54,500 120,000 42,500 93,500 23,000 50,700 56,000 123,500 43,750 96,500 23,600 52,000 58,000 128,000 60,000 132,500 26,500 58,400 63,000 139,000 51,250 113,000 CB3L

COLORADO OTR LP TABLES Load Index - An international numerical code associated with the maximum load a tire can carry at a certain speed (indicated by its Speed Symbol) and under service conditions specified by Colorado OTR. LI Kg LI LI LI LI LI 0 45 50 190 100 800 150 3,350 200 14,000 250 60,000 1 46.2 51 195 101 825 151 3,450 201 14,500 251 61,500 2 47.5 52 200 102 850 152 3,550 202 15,000 252 63,000 3 48.7 53 206 103 875 153 3,650 203 15,500 253 65,000 4 50 54 212 104 900 154 3,750 204 16,000 254 67,000 5 51.5 55 218 105 925 155 3,875 205 16,500 255 69,000 6 53 56 224 106 950 156 4,000 206 17,000 256 71,000 7 54.5 57 230 107 975 157 4,125 207 17,500 257 73,000 8 56 58 236 108 1,000 158 4,250 208 18,000 258 75,000 9 58 59 243 109 1,030 159 4,375 209 18,500 259 77,500 10 60 60 250 110 1,060 160 4,500 210 19,000 260 80,000 11 61.5 61 257 111 1,090 161 4,625 211 19,500 261 82,500 12 63 62 265 112 1,120 162 4,750 212 20,000 262 85,000 13 65 63 272 113 1,150 163 4,875 213 20,600 263 87,500 14 67 64 280 114 1,180 164 5,000 214 21,200 264 90,000 22 22 15 69 65 290 115 1,215 165 5,150 215 21,800 265 92,500 16 71 66 300 116 1,250 166 5,300 216 22,400 266 95,000 17 73 67 307 117 1,285 167 5,450 217 23,000 267 97,500 18 75 68 315 118 1,320 168 5,600 218 23,600 268 100,000 19 77.5 69 325 119 1,360 169 5,800 219 24,300 269 103,000 20 80 70 335 120 1,400 170 6,000 220 25,000 270 106,000 Tables 21 82.5 71 345 121 1,450 171 6,150 221 25,750 271 109,000 22 85 72 355 122 1,500 172 6,300 222 26,500 272 112,000 23 87.5 73 365 123 1,550 173 6,500 223 27,250 273 115,000 24 90 74 375 124 1,600 174 6,700 224 28,000 274 118,000 25 92.5 75 387 125 1,650 175 6,900 225 29,000 275 121,000

www.coloradootr.com LI Kg LI LI LI LI LI 26 95 76 400 126 1,700 176 7,100 226 30,000 276 125,000 27 97 77 412 127 1,750 177 7,300 227 30,750 277 128,000 28 100 78 425 128 1,800 178 7,500 228 31,500 278 132,500 29 103 79 437 129 1,850 179 7,750 229 32,500 279 136,000 30 106 80 450 130 1,900 180 8,000 230 33,500 31 109 81 462 131 1,950 181 8,250 231 34,500 32 112 82 475 132 2,000 182 8,500 232 35,500 33 115 83 487 133 2,060 183 8,750 233 36,500 34 118 84 500 134 2,120 184 9,000 234 37,500 35 121 85 515 135 2,180 185 9,250 235 38,750 36 125 86 530 136 2,240 186 9,500 236 40,000 37 128 87 545 137 2,300 187 9,750 237 41,250 38 132 88 560 138 2,360 188 10,000 238 42,500 39 136 89 580 139 2,430 189 10,300 239 43,750 40 140 90 600 140 2,500 190 10,600 240 45,000 41 145 91 615 141 2,575 191 10,900 241 46,250 42 150 92 630 142 2,650 192 11,200 242 47,500 43 155 93 650 143 2,725 193 11,500 243 48,750 44 160 94 670 144 2,800 194 11,800 244 50,000 45 165 95 690 145 2,900 195 12,150 245 51,500 46 170 96 710 146 3,000 196 12,500 246 53,000 47 175 97 730 147 3,075 197 12,850 247 54,500 48 180 98 750 148 3,150 198 13,200 248 56,000 49 185 99 775 149 3,250 199 13,600 249 58,000 23 Tables

COLORADO OTR LP Conversion Table - Star Rating to Ply Rating Tire Size Star Rating Corresponding Ply Rating Tire Size Star Rating Corresponding Ply Rating GRADER TIRES WIDE BASE EARTHMOVER 24 24 14.00R24 * 16 ply 16.00R24 * 16 ply 17.5R25 * 16 ply 20.5R25 * 24 ply 23.5R25 * 24 ply STANDARD EARTHMOVER TIRES 14.00R24 *** 32 ply 14.00R25 *** 32 ply 16.00R25 ** 36 ply 18.00R25 * 24 ply 1800R25 ** 36 ply 18.00R33 ** 40 ply 21.00R35 ** 44 ply 24.00R35 ** 48 ply 24.00R49 ** 48 ply 27.00R49 ** 54 ply 30.00R51 ** 58 ply 33.00R51 ** 64 ply 36.00R51 ** 66 ply 3700R57 ** 72 ply 40.00R57 ** 78 ply 53/80R63 * 78 ply 55/80R63 * 86 ply 59/80R63 ** 88 ply 17.5R25 * 16 ply 17.5R25 ** 20 ply 20.5R25 * 24 ply 20.5R25 ** 28 ply 23.5R25 ** 24 ply 23.5R25 ** 32 ply 26.5R25 ** 32 ply 29.5R25 ** 34 ply 33.5R33 ** 44 ply 37.5R33 ** 48 ply 33.25R35 ** 44 ply 37.25R35 ** 48 ply 37.5R39 ** 52 ply WIDE BASE LOADER 15.5R25 * 16 ply 17.5R25 * 16 ply 20.5R25 * 24 ply 20.5R25 ** 28 ply 23.5R25 * 24 ply 23.5R25 ** 32 ply 26.5R25 * 24 ply 26.5R25 ** 36 ply 29.5R25 * 28 ply 29.5R29 * 34 ply 35/65R33 * 36 ply Tables 40/65R39 * 42 ply 45/65R45 * 50 ply

www.coloradootr.com Pressure Conversion Chart PSI KPA PSI KPA PSI KPA PSI KPA 1 10 36 250 70 480 104 710 3 20 37 255 71 490 105 720 4 30 38 260 72 495 107 730 6 40 40 270 74 500 108 740 7 50 41 280 75 510 109 750 9 60 43 290 77 520 111 760 10 70 44 300 78 530 112 770 11 80 45 310 80 540 114 780 13 90 47 320 81 550 115 790 14 100 48 330 82 560 116 800 16 110 50 340 84 570 118 810 17 120 51 350 85 580 119 820 18 130 53 360 87 590 121 830 20 140 54 370 88 600 122 840 21 150 55 380 89 610 124 850 23 160 57 390 91 620 125 860 24 170 58 400 92 630 126 870 26 180 60 410 94 640 128 880 27 190 61 420 95 650 129 890 28 200 62 430 97 660 131 900 30 210 64 440 98 670 132 910 25 31 220 65 450 99 680 133 920 33 230 67 460 101 690 135 930 34 240 68 470 102 700 136 940 Tables

COLORADO OTR LP Tread Depth Conversion Chart mm 32nd mm 32nd mm 32nd 1 1 30 38 95 120 2 3 31 39 100 126 3 4 32 40 105 132 4 5 33 42 110 139 5 6 34 43 115 145 6 8 35 44 120 151 7 9 36 45 125 157 8 10 37 47 130 164 9 11 38 48 135 170 10 13 39 49 140 176 11 14 40 50 145 183 12 15 41 52 150 189 13 16 42 53 155 195 14 18 43 54 160 202 15 19 44 55 165 208 16 20 45 57 170 214 17 21 46 58 175 220 18 23 47 59 180 227 26 26 19 24 48 60 185 233 20 25 49 62 190 239 21 26 50 63 195 246 22 28 55 69 200 252 23 29 60 76 205 258 24 30 65 82 210 265 Tables 25 31 70 88 215 271 26 33 75 94 220 277 27 34 80 101 225 283 28 35 85 107 230 290 29 37 90 113 235 296

www.coloradootr.com FITMENT GUIDE Brand Tire Size Equipment Manufacturer Loading Capacity (MT) Empty (MT) Loaded (MT) Terex Unit Rig MT 6300 AC 363 236 599 Colorado 59/80R63 Terex Unit Rig MT 5500 326 232 558 Caterpillar 797B 345 215 560 Liebherr T282 360 230 590 Colorado 55/80-63 Terex Unit Rig MT 5500 326 232 558 Belaz 75600 320 Colorado 53/80R63 53/80-63 Hitachi EH5000 315 213 528 Komatsu 930E-3SE 291 213 504 Komatsu 930E-4 292 210 502 Colorado 52/80-57 LeTourneau L-1350 Loader 38.1 143.3 181.4 LeTourneau L-1400 Loader 38.1 163.8 201.9 Colorado 50/80-57 Hitachi EH4500 282 198 480 Caterpillar 793C 218 152 370 Colorado 40.00R57 40.00-57 Caterpillar 793D 218 117 335 Terex Unit Rig MT 4400 Mining Truck 218 161 379 Liebherr T262 218 172 390 27 Komatsu 830E 222-227 164-165 386-392 Belaz 75306 220 156 376 Fitment Guide

COLORADO OTR LP FITMENT GUIDE (cont.) Brand Tire Size Equipment Manufacturer Loading Capacity (MT) Empty (MT) Loaded (MT) Colorado 37.00R57 37.00-57 Caterpillar 789C 177 136 313 Terex Unit Rig MT 3700AC Mining Truck 186 149.7 335.7 Terex Unit Rig MT 3700B 172-186 131 303-317 Liebherr T252 181 148.3 329.3 Hitachi EH 3500 190 134 324 Komatsu 730E 183 141 324 Colorado 50/65-51 LeTourneau L-1100 Loader 29.9 106.2 136.1 Caterpillar 657G Scraper 47.2 67.8 115 Colorado 37.25-35 Caterpillar 637G Scraper 34 52.1 86.1 Caterpillar 631 Scraper 34 46.5 80.5 Colorado 35/65-33 875/65-33 Caterpillar AD 55 Underground Truck 60.5 41.5 102 Caterpillar R2900G XTRA Loader 20 56 76 Caterpillar 988H Wheel Loader 11.4 38.2 49.6 Hitachi LX450 46.6 28 28 LeTourneau Log Stacker 6592-94 rear 59 112.1 171.1 LeTourneau Log Stacker 4592-94 front 40.8 22.7 63.5 Colorado 33.25-35 LeTourneau Log Stacker 3592 SL front 31.8 19 50.8 Fitment Guide Colorado 33.25-29 LeTourneau Log Stacker 5092-94 45.4 14.5 59.9 LeTourneau Log Stacker 5592-94 rear 49.9 29.5 79.4 Caterpillar 627G Scraper 23.9 37.9 61.8 Caterpillar 623G Scraper 25 37.4 62.4 Caterpillar 621G Scraper 23.9 32.6 56.5

www.coloradootr.com FITMENT GUIDE (cont.) Brand Tire Size Equipment Manufacturer Loading Capacity (MT) Empty (MT) Loaded (MT) Caterpillar 773F 54.4 45.6 100 Caterpillar 775F 63.5 46.3 109.8 Terex TR60 55 40.7 95.7 Colorado 2400-35 Terex TR70 65 47.7 112.7 Hitachi EH 1100 64.9 45.8 110.7 Komatsu HD 465 55 41.1 96.1 Komatsu HD 605-7 64 45.9 109.9 Belaz 7555 55 41.5 96.5 Terex TR45 41 37 78 Colorado 2100-35 LeTourneau Log Stacker 4592-94 rear 40.8 22.7 63.5 Belaz 7547 45 33 78 Colorado 36.00R51 36.00-51 Caterpillar 784 C Terex MT 3600B 154-172 116-124 271-297 Terex BD 270 243 188 431 Kress 200C Coal Hauler 220 220 Hitachi EH3000 155 123.5 278.5 Caterpillar 785C 136 95.7 231.7 29 Terex Unit Rig MT3300 136 105.2 241.2 Colorado 33.00R51 33.00-51 Komatsu HD1500-7 144.2 105.3 249.5 Komatsu HD1500-5 136-149 101 237-250 LeTourneau Log Stacker 6592-94 front 59 112.1 171.1 Belaz 7513 136 107 243 Fitment Guide

COLORADO OTR LP FITMENT GUIDE (cont.) Brand Tire Size Equipment Manufacturer Loading Capacity (MT) Empty (MT) Loaded (MT) Caterpillar 854G Wheel Dozer 94.4 Komatsu WA800-3 101 Colorado 45/65-45 LeTourneau D950 Wheel Dozer 99.8 LeTourneau L950 Loader 24.5 82.1 106.6 LeTourneau L1000 23.1 82.1 105.2 Colorado 27.00R49 27.00-49 31/80R49 Caterpillar 776D 107.5 55.5 163 Caterpillar 777F 90.9 72.4 163.3 Terex TR100 91 85 176 Komatsu 785-5 96 72.4 163.4 Komatsu 785-7 94 72 166 Hitachi EH1600 89.7 70.9 160.6 Hitachi EH1700 98.4 71.7 170.1 Colorado 45/65-39 41.25/70-39 Caterpillar 844H Wheel Dozer 70.8 Caterpillar 990H Wheel Dozer 77 30 30 Fitment Guide Colorado 37.5-39 Colorado 1800-33 Caterpillar 651B-E Scraper LeTourneau Log Stacker 5592-94 front 49.9 29.5 79.4 Caterpillar 769D 36.6 34.8 71.4 Caterpillar 771D 41 34.7 75.7 Komatsu HD405-7 40.1 34.4 74.5 Komatsu HD325-7 37.7 31.6 69.3 Hitachi EH750 41.9 33.5 75.4

www.coloradootr.com FITMENT GUIDE (cont.) Brand Tire Size Equipment Manufacturer Loading Capacity (MT) Empty (MT) Loaded (MT) Terex TR35 31.7 24 55.7 Colorado 1800-25 Hitachi EH600 33.1 23.8 56.9 Belaz 7540 30 22.6 52.6 31 Fitment Guide

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