Table of Contents

Giant Off-the-Road tires

1. What is a Giant OTR tire?

OTR is short for off the road tires, while Giant OTR tires are those OTR tires of size range from 49inch to 63inch.
Sizes:
27.00R49、30.00R51、33.00R51、36.00R51、37.00R57、40.00R57、46/90R57、50/80R57、53/80R63、55/80R57 & 59/80R63
Usually, the same size in bias type is also available. For example, 27.00-49, 33.00-51 etc.

2. Major manufacturers

MICHELIN
GOODYEAR
BRIDGESTONE
YOKOHAMA
TITAN
HILO
MAXAM
ZC RUBBER

Michelin OTR Giant size pattern list
Size XDR®3XD® MineworksXD® GRIPXVCXDR®XDR®+XDTXDCXDR®3+XDR®250XDR®250+XDR®3 Extra LoadXDR®3+ EXTRA LOADXDR®2S
27.00R49 YYYY　　　　　　　　　　
30.00R51 　　　　YY　　　　　　　　
33.00R51 Y　　　　　YY　　　　　　
36.00R51 　　　　Y　　Y　　　　　　
37.00R57 Y　　　　　　　　　　　　　
40.00R57 Y　　　　　　YY　　　　　
50/80R57 　　　　　　　　　YY　　　
50/90R57 Y　　　Y　　　Y　　　　　
53/80R63 Y　　　　　　　Y　　YY　
59/80R63 Y　　　　　　　Y　　Y　Y
27.00R49 XDR®3XD® MineworksXD® GRIPXVC
30.00R51 XDR®XDR®+  
33.00R51 XDR®3XDTXDC 
36.00R51 XDR®XDC  
37.00R57 XDR®3   
40.00R57 XDR®3XDCXDR®3+ 
50/80R57 XDR®250XDR®250+  
50/90R57 XDR®3XDR®XDR®3+ 
53/80R63 XDR®3XDR®3+XDR®3 Extra LoadXDR®3+ EXTRA LOAD
59/80R63 XDR®3XDR®3+XDR®3 Extra LoadXDR®2S

Michelin Tire Compound information:

　TypesDescriptionTKPH (TMPH)
Aggression
Resistant		A4Particularly resistant to cuts, tread tearing
and abrasion on very rough surfaces		Minimum
AParticularly resistant to cuts, tread tearing and abrasion at average
speeds that are higher than those for A4 (above)
StandardB4Compromise solution between abrasion resistance
and average speed on rough surfaces		Moderate
MB4Same as Type B4 but with a higher wear resistance
BHigher resistance to internal heat generation
on surfaces that are not particularly rough		Average
MBSame as Type B but with a higher wear resistance
Heat ResistantC4Adapted to running on long cycles at high speeds
on well-maintained roads		High
MC4Same as Type C4 but with a higher wear resistance
CVery high resistance to high average speeds
on long cycles run on well-maintained roads		Very High
MCSame as Type C but with a higher wear resistance

MICHELIN EARTHMOVER TIRE COMPOUNDS
GOODYEAR OTR
Goodyear OTR Giant size pattern list
Size GP-4BRH-4A+RL-4ARL-4HRL-4JRL-4JIIRM-4A+RT-4A+RL-3J(E3)RL-4M+RM-4B+RM-3A(E3)
27.00R49 YYYYYYYY　　　　
30.00R51 　　　Y　Y　　　　　　
33.00R51 Y　　Y　　Y　YY　　
36.00R51 　　　Y　Y　　　　　　
37.00R57 　　　Y　　Y　　Y　　
40.00R57 　Y　　　　　　　　Y　
46/90R57 　Y　　　　Y　　　Y　
53/80R63 　　　　　　Y　　　Y　
59/80R63 　Y　　　　Y　　　　Y
27.00R49 GP-4BRH-4A+RL-4ARL-4HRL-4JRL-4JIIRM-4A+RT-4A+
30.00R51 RL-4HRL-4JII      
33.00R51 GP-4BRL-4HRM-4A+RL-3J(E3)RL-4M+   
36.00R51 RL-4HRL-4JII      
37.00R57 RL-4HRM-4A+RL-4M+     
40.00R57 RH-4A+RM-4B+      
46/90R57 RH-4A+RM-4A+RM-4B+     
53/80R63 RM-4A+RM-4B+      
59/80R63 RH-4A+RM-4A+RM-3A(E3)     

Goodyear Tire Compound information:

Compound code23456
Compound descriptionleast cut-resistancein-betweenmost cut-resistance
most heat resistancein-betweenleast heat resistance
Construction codeConstruction description
SStandard
HReinforced (Heavy Duty)
SLStandard with low heat impact

goodyear tire compound
BRIDGESTONE LOGO
Bridgestone OTR Giant size pattern list
Size VHSVFTVMTVRFVMTSVMTPVZTSVZTPVELSVRLSVREPVRDPVRPSVRQPVREVVZTBVRWP
27.00R49 　X　　XX　　　XXX　　X　　
30.00R51 　　X　　　　　　X　　　　　　　
33.00R51 　　X　　X　　　X　XX　　　　
36.00R51 X　　　　　　　　X　　　　　　　
37.00R57 　　　　　　X　　X　　　　　　　
42/90R57 　　　　　　　　　　　XX　　　　
40.00R57 　　X　　　X　X　　XX　　　　
46/90R57 　　　　　　　X　　　XX　XXX
50/80R57 　　　　　　　　　　　　　　X　　
50/90R57 　　　　　　　　　　　　X　　　　
53/80R63 　　　　　　　　　　　　X　X　　
59/80R63 　　　X　　　　　　　　X　X　　
27.00R49 VFTVMTSVMTPVRLSVREPVRDPVREV
30.00R51 VMTSVMTPVRLSVREPVRDPVREV 
33.00R51 VMTVMTPVRLSVRDPVRPS  
36.00R51 VHSVRLS     
37.00R57 VZTSVRLS     
42/90R57 VRDPVRPS     
40.00R57 VZTSVELSVRDPVRPS   
46/90R57 VZTPVRDPVRPSVREVVZTBVRWP 
50/80R57 VREV      
50/90R57 VRPS      
53/80R63 VRPSVREV     
59/80R63 VRFVRPSVREV    

Bridgestone Tire Compound information:

Service BS Code No. Structure
Earthmover Service (E)1AStandard
2ACut-resistant
3AHeat-resistant
Grader Service (G)1AStandard
2ACut-resistant
Loader & Dozer Service (D)2ACut-resistant
2V*Special cut-resistant (Type“V”)
2Z*Special cut-resistant (Type“Z”)
Logging Service (S)2V**Standard
Subterranean (L)2A Cut-resistant

NOTES: *Bias Tire Only
**2V tires are standard for log skidder service since the possibility of the cutting is high in log skidder operations.BRIDGESTONE EARTHMOVER TIRE COMPOUNDS

3. What machines use GIANT OTR?

For example,
27.00R49 is for
BELAZ 7549
CATPILLAR 777
KOMATSU 785
TEREX TR100

MakeModelStandard TireOptional Tire
Caterpillar77727.00R49　
Caterpillar78533.00R5136.00R51
Caterpillar78937.00R5740.00R57
Caterpillar79340.00R5746/90R57 50/80R57
Caterpillar793F40.00R57　
Caterpillar794AC53/80R63　
Caterpillar796AC59/80R63　
Caterpillar797F59/80R63　
Caterpillar798AC59/80R63　
Belaz75570、7557127.00R49　
Belaz75581、75583、75585、75589、7558B、7558D、7558F27.00R49　
Belaz7513、75131、75135、75137、75139、7513A、7513B、7513D33.00R51　
Belaz75170、75172、75173、7517436.00R51　
Belaz75180、7518237.00R57　
Belaz75310、75311、75312、75313、75315、75318、7531940.00R57; 46/90R57　
Belaz7532053/80R63　
Belaz75602、75603、75604、7560559/80R63　
KomatsuHD785-827.00R49　
KomatsuHD1500-8E033.00R51　
Komatsu730E-1037.00R5740.00R57
Komatsu830E-550/80R57　
Komatsu860E-1K50/80R5750/90R57
Komatsu930E-4SE53/80R63　
Komatsu930E-5SE53/80R63　
Komatsu960E-2K53/80R63　
Komatsu980E-559/80R63　
HitachiEH5000AC-353/80R63　
HitachiEH3500AC-337.00R5740.00R57
HitachiEH4000AC-346/90R5740.00R57、50/80R57

For more information, please visit:
tire-size-fitting-for-your-equipment

4. Where are these tires used?

These giant tires are usually used on the open-pit mining sites.
What is a open-pit mining site?

open pit mining tire 

Open-pit mining, also known as opencast mining, is a surface mining technique that extracts minerals from an open pit in the ground. Open-pit mining is the most common method used throughout the world for mineral mining. This surface mining technique is used when mineral or ore deposits are found relatively close to the surface of the earth. Open-pits are sometimes called ‘quarries’ when they produce building materials and dimension stone.

Materials commonly extracted from open-pit mines include:

Bitumen     Clay     Coal    Copper     Coquina   Diamonds      Iron   
Gold       Gravel and Bedrock     Granite     Gritstone    Gypsum
Limestone    Marble     Molybdenum    Silver     Uranium    Phosphate

Contrary to Open pit mining, is the undergroud mining.underground mining tire

Underground mining is the process of extracting minerals, rocks and other industrial materials other than oil, coal and gas from the earth through the development of shafts and entries from the surface to the deposits or seam before recovering the products and using underground extraction methods.

  1. 5. How to Handle (load/unload) GIANT OTR TIRES?

Precisely defined methods must be used when handling the tires. Failure to use these methods may cause irreparable damage to tires and may even be dangerous. The bead is a sensitive part of the tire, and if it is damaged during handling operations, this may lead to premature scrapping of the tire. 

To limit the risks:
Tires should preferably be handled using the appropriate equipment for this type of work: forklift truck, mechanical loader or crane equipped with a tire handler or textile straps; lift the tire by the tread.

If there is no other option than to lift and handle the tire by the beads, the following must be used:

  • 1. preferably wide textile straps (do not use metal slings or chains as these may damage the beads);
  • 2. or, if need be, a forklift truck equipped with a large diameter boom attachment. In this case, care must be taken not to damage the sidewalls!
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