TABLE OF CONTENTS T.R.A. CLASSIFICATION OF OFF-THE-ROAD TYRES 1 TYPE OF TREAD 1 T.R.A. (Tyre and Rim Association) CODE 2 TREAD THICKNESS 2 YOKOHAMA TYRE SPECIFICATION CODE 2 CONVERSION CHART 2 RADIAL TYRES EARTHMOVER TYRES RT31 E-3 3 RB31 E-3 3 RL31 E-3 3 RT41 3 RL45 3 RB41 3 RB42 4 RL42 4 LOADER & DOZER TYRES RT31 L-3 4 RB31 L-3 4 RL31 L-3 4 RT41 L-4 4 RL45 L-4 5 GRADER TYRES RT21 G-2 5 WHEEL / ALL-TERRAIN CRANE TYRES RB01 5 RB03 5 INDUSTRIAL TYRES RR41 IND-4 5 RL43 IND-4 5 BIAS TYRES EARTHMOVER TYRES Y-67 E-3 6 Y-565 E-3 6 Y-523 6 Y-523U 6 Y-567 6 LOADER & DOZER TYRES Y-3 L-2 7 Y-67 L-3 7 Y-575 L-3 7 Y-526K L-3 7 Y-67E L-4 8 Y-545 L-4 with side protector 8 Y-524 L-5 with side protector 8 Y-524 L-5 8 Y-524Z L-5 8 LOADER & DOZER TYRES (UNDERGROUND) Y-69K L-5S with side protector 9 Y-525 L-5 9 Y-69 L-5S 9 Y-69U L-5S 9 GRADER TYRES Y-25 G-2 Y-3 G-2 Y-67 G-3 COMPACTOR TYRES Y-69 C-1 INDUSTRIAL TYRES Y-67 11 Y-92 11 Y-69PS 11 Y-532 11 Y-543 11 Y-505 Y-573 Y-553 Y-523 IND-4 Y-69 IND-4 Y-505 IND-4 Safety Precautions Concerning Mounting, Demounting and Operation 13
T.R.A. CLASSIFICATION OF OFF-THE-ROAD TYRES Type of Vehicle T.R.A. Code Type of Thickness YOKOHAMA Pattern Name Radial Ply Page Diagonal (Bias) Ply Page Rigid Dump Trucks, Articulated Dump Trucks, Scrapers E-3 Rock Rock Deep RB31, RL31, RT31 RT41, RB41, RB42, RL42, RL45 P3 P3, 4 Y-67, Y-565 Y-523, Y-523U, Y-567 P6 P6 Front-End Loaders, Tyre Dozers L-2 Traction Y-3 P7 L-3 Rock RB31, RL31, RT31 P4 Y-67, Y-526K, Y-575 P7 L-4 Rock Deep RT41, RL45 P4, 5 Y-67E, Y-545 P8 L-5 Rock Extra Deep Y-524, Y-524Z, Y-525 P8, 9 L-5S Smooth Extra Deep Y-69K, Y-69, Y-69U P9 Motor Graders G-2 Traction RT21 P5 Y-25, Y-3 P G-3 Rock Y-67 P Wheel Cranes, All-Terrain Cranes RB01, RB03 P5 Tyre Rollers C-1 Smooth Y-69 P Industrial Vehicle Y-67, Y-92, Y-69PS, Y-505, Y-532, Y-543, Y-553, Y-573 P11, IND-4 Deep RL43, RR41 P5 Y-523, Y-505, Y-69 P TYPE OF TREAD Rock Traction Rib Block Smooth (Tyre Rollers) Smooth (Underground) 1
T.R.A. (Tyre and Rim Association) CODE E G L C IND Application Earthmover Grader Loader & Dozer Compactor Industrial Example L-3 1 2 3 4 5 5S Thickness Rib Traction Rock Rock Deep Rock Extra Deep Smooth Extra Deep TREAD THICKNESS 0% Deep 150% Extra Deep 250% Caution: Selection of the tread depth requires the matching of actual intended use and the tyre s TMPH rating. Improper tyre application results in excessive heat generation. E-3, L-2, L-3, G-2, G-3,, L-4, IND-4 L-5, L-5S TYRE SPECIFICATION CODE Upper 49 InchesBIAS&RADIAL RE-X CP-X HR-X Tyre Size Tyre Mark (On The Tyre Sidewall) T.R.A. CODE NO. CP-X Cut Protected Heat Resistant Tyre Size Other Tyre SizesBIAS&RADIAL Tyre Mark (On The Tyre Sidewall) Cut Protected () Heat Resistant T.R.A. CODE NO. L-3 Steel Breaker Wide Steel Breaker For SDC Rims CONVERSION CHART (STAR RATING TO PLY RATING) Type of Vehicle Tyre Size Star Rating Ply Rating (PR) Type of Vehicle Tyre Size Star Rating Ply Rating (PR) 17.5R25 Up to 24PR Graders 1400R24 Up to PR 20.5R25 Up to 28PR 17.5R25 Up to PR Dump Trucks 23.5R25 26.5R25 Up to 32PR Up to 32PR Loaders 20.5R25 23.5R25 Up to 24PR Up to 24PR 29.5R25 Up to 34PR 26.5R25 Up to 24PR 00R25 Up to 36PR 29.5R25 Up to 28PR 2 : Tube Type : Tubeless Type
RADIAL TYRES EARTHMOVER TYRES RT31 E-3 RB31 E-3 RL31 E-3 Specially designed for articulated dump trucks used on soft and muddy roads. Non-directional tread pattern provides better traction, self-cleaning and flotation on soft and muddy surface operation. Use: Articulated dump trucks 20.5R25* 23.5R25 26.5R25* 750/65R25 *E-3+, Depth 5% level Specially designed for use by articulated dump trucks. The tread pattern design with a non-directional block pattern provides both abrasion resistance and excellent traction on soft surfaces. Use: Articulated dump trucks 17.5R25 20.5R25 23.5R25 26.5R25 29.5R25 The RL31 is designed for use by articulated dump trucks. The rock flush pattern and shoulder protector provide excellent cut resistance ( & Sidewall). Use: Articulated dump trucks 17.5R25 20.5R25 23.5R25* *E-3+, Depth 5% level RT41 RL45 RB41 Specially designed for articulated dump trucks. Thee tread pattern design with non-directional block pattern provides both abrasion resistance and excellent traction on soft, rocky and gravel surfaces. Use: Articulated dump trucks 23.5R25 26.5R25 29.5R25 Specially designed for articulated dump trucks. Non-directional block pattern provides both abrasion and cut resistance on rocky and gravel surfaces. Use: Articulated dump trucks 26.5R25 Specially designed for use abrasive condition on muddy and soft surfaces. The tread pattern is designed with a non-directional block pattern. It provides abrasion and cut resistance as well as excellent traction on soft surfaces by adopting deep treads with side protectors. Use: Rigid dump trucks 14.00R25.00R25 3
RADIAL TYRES EARTHMOVER TYRES LOADER & DOZER TYRES RB42 RL42 RT31 L-3 Specially designed for dump trucks. pattern design with non-direction block pattern and deep tread provide both abrasive resistance and excellent traction on muddy and soft surfaces. High resistance to wearing ensures long tread life. Use: Rigid dump trucks Specially designed for dump trucks. Deep flush pattern and shoulder protection provide both abrasion and high cut resistance on rocky and gravel surfaces (tread & sidewall). Use: Rigid dump trucks Specially designed for wheel loaders used on soft and muddy roads. Non-directional tread pattern provides better traction, self-cleaning and flotation on soft and muddy surface operation. 18.00R33 24.00R35 20.5R25* 23.5R25 18.00R33 24.00R35 27.00R49* 26.5R25* 750/65R25 *E-3+, Depth 5% level *Not available yet and informed when available LOADER & DOZER TYRES RB31 L-3 RL31 L-3 RT41 L-4 The tread pattern is designed with a non-directional block pattern. It provides both abrasion resistance and excellent traction on soft surfaces. 17.5R25 20.5R25 23.5R25 26.5R25 29.5R25 Specially designed for wheel loaders & dozers. The rock flush pattern and shoulder protector provides excellent cut resistance ( & Sidewall). 17.5R25 20.5R25 23.5R25* *E-3+, Depth 5% level Specially designed for wheel loaders & dozers. The tread pattern design provides both abrasion resistance and excellent traction on soft, rocky and gravel surfaces. 23.5R25 26.5R25 29.5R25 4 : Tube Type : Tubeless Type
RADIAL TYRES LOADER & DOZER TYRES GRADER TYRES WHEEL / ALL-TERRAIN CRANE TYRES RL45 L-4 RT21 G-2 TRACTION RB01 Specially designed for wheel loaders & dozers. Non-directional block pattern provides both abrasion and cut resistance on rocky and graval surfaces. 26.5R25 The tread pattern is designed with a non-directional block pattern for motor graders. It provides good traction and flotation on soft and muddy surfaces as well as better self-cleaning. Use: Motor graders 14.00R24 The RB01 is designed for highway use by wheel/all-terrain crane. Features excellent performance for uneven wear and long life tread by new tread pattern and new rubber compound. Lower fuel consumption, lower tyre noise, better driving stability and high speed durability by adopting tough casing construction and optimized block pattern. Use: Wheel cranes & All-terrain cranes 385/95R25 445/95R25 505/95R25 14.00R24 LOAD INDEX 170E 170F (177E) 183E WHEEL / ALL-TERRAIN CRANE TYRES RB03 INDUSTRIAL TYRES RR41 IND-4 RL43 IND-4 The RB03 is designed for highway use by wheel/ all-terrain crane. Newly designed all-weather type tread pattern and new tread compound provide smooth wearing and long life tread. Special belt wire, 4 ply belts and high turn-up carcass construction assure lower fuel consumption, better driving stability and high speed durability. Use: Wheel cranes & All-terrain cranes LOAD INDEX 385/95R25 170E 14.00R24 RR41 is designed for yard service vehicles, especially straddle carriers. Use: Straddle carriers.00r25 RL43 is designed for forklifts and terminal tractors. This type provides better stability in heavy load operations. Use: Forklifts 14.00R24 5
EARTHMOVER TYRES : BIAS Y-67 E-3 Y-565 E-3 Y-523 For hauling over rock, coal, and log-strewn terrain. Tough tread resists cuts and snags. Less heat buildup enables smooth running over longer distances than the deep tread () types. Use: Rigid dump trucks & Scrapers For hauling over rock, coal, and log-strewn terrain. Tough tread resists cuts and snags. Less heat buildup enables smooth running over longer distances than the deep tread () types. Use: Rigid dump trucks Specially designed for use under highly abrasive conditions. Large ground contact area of wide, deep double chevron flush pattern provides good cut resistance and long service life. Use: Rigid dump trucks.00-20 11.00-20.00-20.00-24 14.00-25.00-24.00-25 18.00-25 21.00-25 18.00-33, 14 14, 18, 24, 20 20, 24, 28 20 24 20, 24 24 24, 28, 32 32 24 32, 36 36.00-51 58, 66.00-25 18.00-25 18.00-33 21.00-35 24.00-35 24.00-49 27.00-49 30.00-51 33.00-51 36.00-51 40.00-57 24, 28 32 32, 36, 40 36, 40 36, 44, 48 42, 48 48 46, 52 50, 58 50, 58, 66 68, 76 24.00-35 36, 42 27.00-49 48 26.5-25 29.5-25 26.5-29 29.5-29 33.25-29 33.5-33 26 28 26 28, 34 26, 32 38 Y-523U Y-567 29.5-35 34 33.25-35 32, 38 37.25-35 30, 36 37.5-39 44, 52 Specially designed for abrasive conditions. Deep tread, deeper than Y-523, provides long tread life and tough tread cut resistance. For short haul operations. Use: Rigid dump trucks 18.00-33 32 Specially designed for long haul operations. Less heat buildup by circumferential grooves of crown area and dimples at shoulder area. Use: Rigid dump trucks 33.00-51 40.00-57 50, 58 68 6 : Tube Type : Tubeless Type
LOADER & DOZER TYRES : BIAS Y-3 L-2 TRACTION Y-67 L-3 Y-575 L-3 Good traction and flotation on muddy ground. Its directionally opposed lugs produce selfcleaning action. For loaders and dozers that are mainly used on rock, coal, and log-strewn terrain. Its tough tread is protected from cuts and snags, and its wide ground contact area lengthens service life. The Y-575 features an optimised configuration for improved durability and cut resistance. Its flush tread pattern provides greater contact area meaning a steady, more constant area remains in contact over varying surfaces..00-20 13.00-24 8,, 14.00-24 -.5 13.5-20 42X17-20 15.5-25 17.5-25 20.5-25 23.5-25.9-24 18.4-24.5/70-4 14, 4, 6,,, 20, 20, 6 *.00-24 *13.00-24 * *.9-24 *15.5-25 *17.5-25 *20.5-25 *23.5-25 *26.5-25 *29.5-25 *29.5-29, 20 18,, 20, 24,,, 20,, 20, 24 20, 24,,,, 20, 20, 24 20, 24, 28 22, 28 28 *17.5-25 *20.5-25 *23.5-25 *26.5-25 *29.5-25,, 20, 20,,, 20, 20, 24, 20, 24, 28 22, 28 17.5/65-20 Y-526K L-3 Developed especially for use on loaders. Unique asymmetrical tread pattern and reinforced outer sidewall help prevent cuts. *20.5-25 *23.5-25, 20, 20, 20, 20 *Steel breaker construction is also available upon request. **Steel breaker construction. 7
LOADER & DOZER TYRES : BIAS Y-67E L-4 Y-545 with side protector L-4 Y-524 with side protector L-5 EXTRA Suitable for loaders and dozers on rock, coal, and log-strewn terrain. Deep tread has good wear and cut resistance. Suited for loaders and dozers on rock, coal, and log-strewn terrain. Deep tread has good wear and cut resistance. Specially designed for loaders and dozers. Extra deep tread and side protector improve shoulder and sidewall resistance to cuts and wear. *17.5-25 *29.5-29 Y-524 L-5 EXTRA,, 20 28 23.5-25 *26.5-25 *29.5-25 **35/65-33 **45/65-45 Y-524Z L-5 HALF SLICK EXTRA, 20, 24 20, 24, 32 22, 28 24, 30, 36, 42 50, 58 20.5-25 *26.5-25 *29.5-25 **35/65-33 **40/65-39 **45/65-45,, 20 20, 24, 28, 32 22, 28 24, 30, 36, 42, 48 30, 36, 56 38, 46, 50, 58 Specially designed for loaders and dozers in highly abrasive conditions. Extra deep tread has strong resistance to cuts and wear. 23.5-25 *29.5-29, 20, 24 28, 34 Specially designed half slick asymmetric tread pattern provides superior tread and sidewall cut resistance, resulting in better tyre life. **35/65-33 **40/65-39 **45/65-45 24, 30, 36, 42 30, 36 38, 46, 50, 58 8 : Tube Type : Tubeless Type
LOADER & DOZER TYRES : BIAS Y-69K with side protector L-5S REINFORCED SMOOTH EXTRA Y-525 L-5 EXTRA Reinforced extra deep tread for longer tread wear life and stronger cut resistance. Modified sidewall profile decreases sidewall cuts. Use: Loaders & Underground vehicles Specially designed for use in underground mines. Its extra deep tread gives long service and outstanding cut resistance. Use: Loaders & Underground vehicles 18.00-25 26.5-25 29.5-29 28, 32 32, 36 34, 40 00-24, 20 Y-69 L-5S SMOOTH EXTRA Y-69U L-5S SMOOTH EXTRA Extra deep tread and reinforced sidewalls offer superior resistance to damage and wear. Use: Loaders & Underground vehicles Specially developed for underground vehicle. Unique Wavy side profile with special reinforcement, such as ZSC or cable wire, provides excellent sidewall cut resistance. Use:Loaders & Underground vehicles.00-24 18.00-25 17.5-25 20.5-25 23.5-25 26.5-25, 20 20, 24 28 24, 28, 32, 20, 24, 28, 28 20 32, 36.00-24* 18.00-25 17.5-25 26.5-25 *L-4S is also available 24, 28, 32 20 28, 32, 36 *Steel breaker construction is also available upon request. **Steel breaker construction. 9
GRADER TYRES : BIAS Y-25 G-2 TRACTION Y-3 G-2 TRACTION Y-67 G-3 Features good traction. The directionally opposed lugs produce self-cleaning action. Use: Motor graders.00-20 11.00-20, 14, 14, Features optimum traction and flotation on muddy ground. Directionally opposed lugs produce self-cleaning action. Use: Motor graders 11.00-20.00-24 13.00-24.00-24 17.5-25, 8,,,, 14,,, For grader use on rock, coal and log-strewn terrain. Tough tread prevents cuts and snags. Large ground contact area provides long service life. Use: Motor graders 13.00-24.00-24, Caution Most loader and grader tyres of 24'' rim diameter are designed for SDC (semi-drop centre) rims and they are identified by FOR SDC RIMS or SDC RIM on the tyre sidewall. Tyres for SDC rims and those for flat base type rims are different in shape and are not interchangeable. COMPACTOR TYRES : BIAS Y-69 C-1 smooth 7.50-9.00-20 6 Specially designed for tyre roller use. Compound used provides good resistance to oily chemicals such as asphalt. Produces highly uniform contact pressure. Use: Tyre roller 11.00-20 14/70-20 15.0-20 14 Please consult with machine manufacturer prior to tyre selection as vehicle specifications may vary greatly. : Tube Type. : Tubeless Type
INDUSTRIAL TYRES : BIAS Y-67 Y-92 Y-69PS Designed for towing tractors at airports and straddle carriers that require better traction than Y-92. Use: Towing tractors, Straddle carriers, Transfer cranes and Forklifts 11.00-20.00-20.00-24 13.00-24 14.00-25.00-25 18.00-25 21.00-25 24.00-29 33.25-29 21.00-35 24.00-35 33.25-35, 18 18, 20 20 18, 20 20, 24, 28 24 28 36 28 24 28, 32, 36 36, 40 36, 40 42 38 40 42, 48 44 The Y-92 is suited for vehicles such as straddle carriers for container handling and towing tractors used at airports. This tyre has a large tread width and ground contact area for good traction on paved ground surfaces. Use: Straddle carriers, Towing tractors and Forklifts 24, 28 Y-532 The Y-69PS is suited for vehicles such as straddle carriers for container handling and towing tractors used at airports. This tyre has a large tread width and ground contact area for good traction on paved ground surfaces. Use: Straddle carriers and Towing tractors.00-25 28, 32 28, 32 Y-543 The Y-532 is designed for yard service vehicles at steel mills. This tyre provides excellent steering stability and minimizes uneven tread wear. Use: Yard service vehicles at steel mills The Y-543 is designed for yard service vehicles. This tyre provides excellent abrasion resistance. Use: Yard service vehicles.00-20.00-20 13.00-20 14.00-25 14 18, 20 20 28 24.00-20.00-24 18, 20 18, 20 24, 28 11
INDUSTRIAL TYRES : BIAS Y-505 Y-573 Y-553 The Y-505 is designed specially for reach stackers and container handlers. This tyre provides excellent durability performance with good tread wear resistance and less uneven tread wear. Use: Container handlers, Forklifts and Reach stackers. The Y-573 is designed specially for towing tractors with regroovable tread. This tyre provides excellent wear resistance and good traction performance. Use: Towing tractors The Y-553 is designed specially for towing tractors with regroovable tread. This tyre provides excellent wear resistance and good traction performance. Use: Towing tractors Y-523 Y-69 Y-505 IND-4 IND-4 IND-4 This tyre is suited for log stackers and Container handlers with a reinforced bead area and heavy load capacity allowance. Use: Log stackers, Container handlers and Forklifts The Y-69 is suited for vehicles such as straddle carriers for container handling and towing tractors used at airports. This tyre has a large tread width and ground contact area for good traction on paved ground surfaces. Use: Container handlers, Forklifts and Log handlers The Y-505 is designed specially for reach stackers and container handlers. This tyre provides excellent durability performance with good tread wear resistance and less uneven tread wear. Use: Forklifts and Container handlers. : Tube Type. : Tubeless Type
Safety Precautions Concerning Mounting, Demounting and Operation WARNING Tyre and rim servicing can be dangerous, and should be performed only by trained personnel using proper tools and procedures. Failure to comply with these procedures may result in faulty positioning of the tyre and/or rim, and cause the assembly to burst with explosive force, sufficient to cause serious physical injury or death. Demounting 1. Before Demounting pressure can blow apart and cause serious injury or death.) assembly. (When you remove the wheel lugs, if the tyre is still under pressure, the assembly may fly apart.) (Foreign material may clog the valve stem during deflation or ice may form as the air leaves the tyre, clogging the valve stem.) 2. During Demounting (If the tool slips off it can fly with enough force to cause serious injury or death.) 3. After Demounting Mounting 1. Before Mounting components with new parts of the same size and type. When a component condition is in doubt, repaired parts may not engage properly.) withstand forces of inflation or operation.) with explosive force.) with manufacturer for approval. and O-ring slot. operating pressure, or when there is obvious or suspected damage to the tyre or wheel flat or seriously underinflated.) 2. During Mounting and Inflation inflated. 2 proper assembly. Observe that O-ring does not roll out of its groove. If assembly is not performed properly, deflate and correct. Never hammer on an inflated or partially inflated tyre/rim assembly. If assembly 2 seat the tyre beads. potential trajectory of the wheel components, and use an in-line valve with gauge or a pressure regulator preset to a desired value when inflating a tyre. When a tyre is in a restraining device, do improperly installed they may fly apart with explosive force.) (Heat from welding will cause a sudden, drastic increase in pressure, resulting in an explosion 3. After Inflation Operation operation. tyre/rim matching. assembly.) rim is dangerously exceeded, and operating a vehicle in this manner can result in damage to the rim and tyre or cause a tyre fire.) failure may prevent serious injury.) brazing) unless the tyre has been removed and approval has been received from the rim withstand forces created by inflation or operation.) Specifications subject to change without notice. 13
Made in Japan. The Yokohama Rubber Co., Ltd. 08 1999-20 CE152 DP