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BIAS LOADER LOAD / INFLATION TABLES

LOADER
SLOW SPEED SERVICE (10 KM/H = 5 MPH)
DISTANCE = UP TO 76 m = 250 FEET ONE WAY
FIGURES IN PARENTHESES DENOTE PLY RATING WHICH BOLD FACE LOADS AND INFLATIONS ARE MAXIMUM
TIRE SIZE
DESIGNATION
TIRE LOAD LIMITS AT VARIOUS COLD INFLATION PRESSURES
kPa 120 140 160 180 200 220 240 260 280 300 325 350
psi 17 20 23 26 29 32 35 36 40 44 47 51
14.0/65-15 kg 1175 1285 1390 1485 1580 1675 1760 (8)          
lbs. 2590 2830 3065 3275 3485 3690 3880 (8)          
12.5/70-16 kg 1050 1145 1240 1330 1410 (6) 1495 1570 1645 (8)        
lbs. 2315 2525 2735 2930 3110 (6) 3295 3460 3625 (8)        
10-16.5 kg       1140 1215 1285 (4)            
lbs.       2515 2680 2830 (4)            
12.5/65-18 kg 1065 1165 1260 1350 1435 1515 1595 1670 (8)        
lbs. 2345 2570 2775 2975 3165 3340 3515 3680 (8)        
15.5/60-18 kg 1525 1670 1805 1935 2060 2195 (8)            
lbs. 3360 3680 3980 4265 4540 4840 (8)            
15.5/70-18 kg 1725 1885 2040 2185 2325 2455 (8)            
lbs. 3800 4155 4495 4815 5125 5410 (8)            
13.5-20 kg       2300 2445 2585 2720 2850 2980 3100 3250 3395 (10)
lbs.       5070 2390 5700 2995 6285 6570 6835 7165 7485 (10)
42X17-20 kg       2740 2915 3080 3240 3395 3545 3690 (10)    
lbs.       6040 6425 6790 7140 7485 7815 8135 (10)    
17.5/65-20 kg 2130 2330 2520 2700 2875 3040 3195 (10)          
lbs. 4695 5135 5555 5950 6340 6700 7045 (10)          
18.4-24 kg 2765 3025 3270 3505 3725 3940 (10)            
lbs. 6095 6670 7210 7725 8210 8685 (10)            


LOADER
SLOW SPEED SERVICE (10 KM/H = 5 MPH)
CONVENTIONAL BIAS TIRES
DISTANCE = UP TO 76 m = 250 FEET ONE WAY
FIGURES IN PARENTHESES DENOTE PLY RATING WHICH BOLD FACE LOADS AND INFLATIONS ARE MAXIMUM

TIRE SIZE
DESIGNATION

TIRE LOAD LIMITS AT VARIOUS COLD INFLATION PRESSURES
kPa 225 250 275 300 325 350 375 400 425 450 475 500 525 550 575 600 625 650 675 700 725 750 775 800 825
psi 33 36 40 44 47 51 54 58 62 65 69 73 76 80 83 87 91 94 98 102 105 109 112 115 120
10.00-20 kg                     3550 3650 3750 3875 4000 4125 4125 4250 (14) 4345 4440 4530 4620 (16)      
lbs.                     7850 8050 8250 8550 8800 9100 9100 9350 (14) 9580 9790 9990 10180 (16)      
11.00-20 kg                   3750 3875 4000 4125 4250 4250 4375 4500 4675 4780 4880 (16)          
lbs.                   8300 8550 8800 9100 9350 9350 9650 9900 10300 10540 10740 (16)          
12.00-24 kg                     5000 5150 5300 5450 5600 5600 5800 6000 6150 (16) 6270 6410 6540 6660 6780 6900 (20)
lbs.                     11000 11400 11700 12000 12300 12300 12800 13200 13600 (16) 13790 14100 14390 14700 14900 15200 (20)
13.00-24 kg         4500 4750 5000 5150 5300 5600 (12) 5600 5800 6000 6150 6500 (16)                    
lbs.         9900 10500 11000 11400 11700 12300 (12) 12300 12800 13200 13600 14300 (16)                    
14.00-24 kg                 6300 (12) 6500 6700 6900 7100 7300(16) 7500 7750 8000 8250 8250 8500 (20)          
lbs.                 13900 (12) 14300 14800 15200 15700 16100 (16) 16500 17100 17600 18200 18200 18700 (20)          
14.00-25 kg                     6700 6900 7100 7300 7500 7750 8000 8250 8250 8500 (20)          
lbs.                     14800 15200 15700 16100 16500 17100 17600 18200 18200 18700 (20)          
16.00-25 kg                     8750 9000 9250 9750 10000 10000 10300 10600 (24) 10900 11200 11200 11500 (28)      
lbs.                     19300 19800 20400 21500  22000 22000 22700 23400 (24) 24000 24700 24700 25400 (28)      
18.00-25 kg     8250 (12) 8750 9250 9500 10000 (16) 10450 10900 11500 11500 11800 12150 12500 (24) 12850 13200 13600 13600 (28) 14000 14500 14500 15000 (32)      
lbs.     18200 (12) 19300 20400 20900 22000 (16) 23000 24000 25400 25400 26000 26800 27600 (24) 28300 29100 30000 30000 (28) 30900 32000 32000 33100 (32)      
18.00-33 kg 8500 (10)                                                
lbs. 18700 (10)                                                
27.00-49 kg                     32500 33500 34500 35500 36500  37500 38750 40000 40000 (42)            
lbs.                     71500 74000 76000 78500 80500  82500 85500 88000 88000 (42)            


LOADER                                                                                       
SLOW SPEED SERVICE (10 KM/H = 5 MPH)
WIDE BASE BIAS TIRES                                                         
DISTANCE = UP TO 76 m = 250 FEET ONE WAY                       
FIGURES IN PARENTHESES DENOTE PLY RATING WHICH BOLD FACE LOADS AND INFLATIONS ARE MAXIMUM
TIRE SIZE
DESIGNATION
TIRE LOAD LIMITS AT VARIOUS COLD INFLATION PRESSURES
kPa 225 250 275 300 325 350 375 400 425 450 475 500 525 550 575 600 625 650 675 700 725 750 775
psi 33 36 40 44 47 51 54 58 62 65 69 73 76 80 83 87 91 94 98 102 105 109 112
15.5-25 kg 4000 4250 (8) 4500 4750 4875 (10) 5150 5300 5600 (12)                              
lbs. 8800 9350 (8) 9900 10500 10700 (10) 11400 11700 12300 (12)                              
17.5-25 kg 4750 5000 5300 5600 5800 6150 (12) 6300 6700 (14) 6900 7100 7300 (16) 7500 7750 8000 8250 (20)                
lbs. 10500 11000 11700 12300 12800 13600 (12) 13900 14800 (14) 15200 15700 16100 (16) 16500 17100 17600 18200 (20)                
20.5-25 kg 6300 6700 (12) 7100 7500 7750 8250 (16) 8500 8750 9250 9500 (20) 9750 10000 10300 (24) 10600 10900 11200 11500 (28)            
lbs. 13900 14800 (12) 15700 16500 17100 18200 (16) 18700 19300 20400 20900 (20) 21500 22000 22700 (24) 23400 24000 24700 25400 (28)            
23.5-25 kg 8000 (12) 8500 9000 9500 (16) 10000 10600 10900 (20) 11200 11800 12150 12500 (24) 12850 13200 13600 (28) 14000 14500 14500 (32)            
lbs. 17600 (12) 18700 19800 20900 (16) 22000 23400 24000 (20) 24700 26000 26800 27600 (24) 28300 29100 30000 (28) 30900 32000 32000 (32)            
26.5-25 kg 10000 (14) 10900 11500 (16) 12150 12500 13200 (20) 13600 14000 (24) 14500 15000 (26) 15500 16000 16500 (30) 17000 (32) 17500 18000 18500 (36) 19000 19500 19500 (40) 20000 20600 20600 (44)
lbs. 22000 (14) 24000 25400 (16) 26800 27600 29100 (20) 30000 30900 (24) 32000 33100 (26) 34200 35300 36400 (30) 37500 (32) 38600 39700 40800 (36) 41900 43000 43000 (40) 44100 45400 45400 (44)
29.5-25 kg 12150 12850 (16) 13600 14500 15000 (22) 16000 16500 17000 17500 (28) 18500 19000 19500 (32) 20000 (34)                    
lbs. 26800 28300 (16) 30000 32000 33100 (22) 35300 36400 37500 38600 (28) 40800 41900 43000 (32) 44100 (34)                    
29.5-29 kg 12850 14000 14500 15500 16000 (22) 17000 17500 18000 19000 (28) 19500 20000 20600 21200 (34) 21800 22400 23000 23600 (40)            
lbs. 28300 30900 32000 34200 35300 (22) 37500 38600 39700 41900 (28) 43000 44100 45400 46700 (34) 48100 49400 50700 52000 (40)            
33.25-29 kg 16000 17000 17500  18500 19500 20600  21200 21800 23000 23600  24300 25000 25750 (38)                    
lbs. 35300 37500 38600  40800 43000 45400  46700 48100 50700 52000  53600 55100 56800 (38)                    
30-33 kg 11200 11800 12500 13200 13600 14500 15000 15500 16000 16500 17000 17500 18000 18500 (36) 19000 19500 20000 20600 21200 21800 (46)      
lbs. 24700 26000 27600 29100 30000 32000 33100 34200 35300 36400 37500 38600 39700 40800 (36) 41900 43000 44100 45400 46700 48100 (46)      
33.5-33 kg 17500 18500 19500 20600 21800 22400 23600 24300 25750 (32) 26500 27250 28000 29000 30000 30000 30750 (44)              
lbs. 38600 40800 43000 45400 48100 49400 52000 53600 56800 (32) 58400 60000 61500 64000 66000 66000 68000 (44)              
37.5-33 kg 21200 22400 23600 25000 25750 27250 28000 (30) 29000 30750 31500 (36) 32500 33500 34500 (42) 35500 36500 37500 38750 38750 (54)          
lbs. 46700 49400 52000 55100 56800 60000 61500 (30) 64000 68000 69500 (36) 71500 74000 76000 (42) 78500 80500 82500 85500 85500 (54)          
33.25-35 kg 17000 18000 19000 20000 21200 (24) 22400 23000 24300 25000 25750 (32) 26500 27250 28000 (38) 29000 30000 30000 (44) 30750 31500 32500 33500 (50)      
lbs. 37500 39700 41900 44100 46700 (24) 49400 50700 53600 55100 56800 (32) 58400 60000 61500 (38) 64000 66000 66000 (44) 68000 69500 71500 74000 (50)      
37.25-35 kg 20600 21800 23000 24300 25750 26500 28000  29000 30000 30750 (36) 31500 32500 33500 (42)                    
lbs. 45400 48100 50700 53600 56800 58400 61500  64000 66000 68000 (36) 69500 71500 74000 (42)                    
37.5-39 kg 22400 24300 (20) 25000 26500 28000 29000 30750 31500 32500 33500 (36) 34500 35500 37500 37500 (44) 38750 40000 41250 42500 42500 43750 45000 (60)    
lbs. 49400 53600 (20) 55100 58400 61500 64000 68000 69500 71500 74000 (36) 76000 78500 82500 82500 (44) 85500 88000 91000 93500 93500 96500 99000 (60)    
37.5-51 kg 25750 27250 29000 30000 31500 33500 34500 35500 37500 38750  40000 41250 42500  42500 (44) 43750 45000 46250 47500 (52)          
lbs. 56800 60000 64000 66000 69500 74000 76000 78500 82500 85500  88000 91000 93500  93500 (44) 96500 99000 102000 104500 (52)          
49.5-57 kg 48750 51500 54500 58000 60000 63000 65000 69000 71000 73000 75000 77500 80000 82500 85000 85000 87500 (68)            
lbs. 107500 113500 120000 128000 132500 139000 143500 152000 156500 161000 165500 171000 176500 182000 187500 187500 193000 (68)            
50/80-57 kg 48750 51500 54500 58000 60000 63000 65000 69000 71000 73000 75000 77500 80000 82500 85000 85000 87500 (68)            
lbs. 107500 113500 120000 128000 132500 139000 143500 152000 156500 161000 165500 171000 176500 182000 187500 187500 193000 (68)            
TIRE SIZE
DESIGNATION
TIRE LOAD LIMITS AT VARIOUS COLD INFLATION PRESSURES                  
kPa 400 425 450 475 500 525 550 575 600 625 650 675 700 725                  
psi 58 62 65 69 73 76 80 83 87 91 94 98 102 105                  
53.5/85-57 kg 80000 82500 85000 90000 92500 95000 97500 100000 103000 103000 106000 (68) 109000 112000 115000 (76)                  
lbs. 176500 182000 187500 198500 204000 209500 215000 220500 227000 227000 233500 (68) 240500 247000 253500 (76)                  
TIRE SIZE
DESIGNATION
TIRE LOAD LIMITS AT VARIOUS COLD INFLATION PRESSURES                  
kPa 310 340 380 410 450 480 510 550 580 620 650 690 720 750                  
psi 45 50 55 60 65 70 75 80 85 90 95 100 105 110                  
49.5/85-57 kg 68500 73000 77000 81000 85000 88500 92500 96000 99500 103000 (68) 106000 110500 (76)                      
lbs. 150500 160500 169500 178500 187000 195000 203000 211000 218500 226000 (68) 233500 243500 (76)                      
55.5/80-57 kg 66000 69750 74500 77750 82000 85250 88250 92250 95250 (68) 100000 103000 106000 (84)                      
lbs. 145000 156000 164000 171000 180500 187500 194000 203000 210000 (68) 220500 227000 233500 (84)                      
58/85-57 kg 78500 83500 88500 93000 97500 102000 106000 110000 114000 118000 121500 125500 (84)                      
lbs. 173000 184000 194500 204500 214500 224000 233000 242000 250500 260000 267000 275500 (84)                      

LOADER
SLOW SPEED SERVICE (10 KM/H = 5 MPH)
65 SERIES AND 70 SERIES BIAS TIRES
DISTANCE = UP TO 76 m = 250 FEET ONE WAY
FIGURES IN PARENTHESES DENOTE PLY RATING WHICH BOLD FACE LOADS AND INFLATIONS ARE MAXIMUM
TIRE SIZE
DESIGNATION
TIRE LOAD LIMITS AT VARIOUS COLD INFLATION PRESSURES
kPa 275 300 325 350 375 400 425 450 475 500 525 550 575 600 625 650 675
psi 40 44 47 51 54 58 62 65 69 73 76 80 83 87 91 94 98
65 SERIES
65/30-29 kg 11500 12150 12850 13200 14000 14500 (24)                      
lbs. 25400 26800 28300 29100 30900 32000 (24)                      
35/65-33 kg 16500 17000 18000 19000 (24) 19500 20000 21200 21800 (30) 22400 23000 23600 (36) 24300 25000 25750 26500 (42)    
lbs. 36400 37500 39700 41900 (24) 43000 44100 46700 48100 (30) 49400 50700 52000 (36) 53600 55100 56800 58400 (42)    
65/35-33 kg 16500 17000 18000 19000 (24) 19500 20000 21200 21800 (30) 22400 23000 23600 (36) 24300 25000 25750 26500 (42)    
lbs. 36400 37500 39700 41900 (24) 43000 44100 46700 48100 (30) 49400 50700 52000 (36) 53600 55100 56800 58400 (42)    
65/40-39 kg 22400 23600 25000 25750 27250 (30) 28000 29000 30000 30750 (36)                
lbs. 49400 52000 55100 56800 60000 (30) 61500 64000 66000 68000 (36)                
45/65-39 kg 28000 29000 30750 32500 33500 34500 36500 37500 38750 40000 41250 (46)            
lbs. 61500 64000 68000 71500 74000 76000 80500 82500 85500 88000 91000 (46)            
45/65-45 kg 30000 31500 32500 34500 35500 37500 38750 (38) 40000 41250 42500 43750 (46) 45000 46250 (50) 47250 48250 49250 50000 (58)
lbs. 66000 69500 71500 76000 78500 82500 85500 (38) 88000 91000 93500 96500 (46) 99000 102000 (50) 104200 106400 108600 110000 (58)
65/45-45 kg 30000 31500 32500 34500 35500 37500 38750 (38) 40000 41250 42500 43750 (46) 45000 46250 (50) 47250 48250 49250 50000 (58)
lbs. 66000 69500 71500 76000 78500 82500 85500 (38) 88000 91000 93500 96500 (46) 99000 102000 (50) 104200 106400 108600 110000 (58)
50/65-51 kg 37500 40000 42500 43750 46250 47500 48750 51500 53000 54500 56000 (50) 58000 58000 (54) 60000 61500 63000 (62)  
lbs. 82500 88000 93500 96500 102000 104500 107500 113500 117000 120000 123500 (50) 128000 128000 (54) 132500 135500 139000 (62)  
65/65-57 kg 67000 71000 73000 77500 80000 82500 87500 90000 92500 95000 (62)              
lbs. 147500 156500 161000 171000 176500 182000 193000 198500 204000 209500 (62)              
70 SERIES
41.25/70-39 kg 27250 29000 30000 31500 32500 (34) 33500 35500 36500 37500 (42)                
lbs. 60000 64000 66000 69500 71500 (34) 74000 78500 80500 82500 (42)                
70/70-57 kg               109000 112000 115000 118000 121000 125000 128500 132000 132000 136000 (84)
lbs.               240500 247000 253500 260000 267000 275500 283500 291000 291000 300000 (84)

Excess Load
  E2, E3, E4 L**
Maximum Excess Load 15% 15%
Maximum Excess Pressure 30% 30%
Maximum Pressure 825kPa 825kPa
120psi 120psi

When excess loads are encountered, cold inflation pressure must be increased to compensate for higher loads.  For each 1% increase in load, inflation pressure must be increased by 2%.

* Except following sizes on the list
  8.25-20 9.00-20 10.00-20 11.00-20

** Except following sizes on the list
  5.70-12 27X8.50-15 14.0/65-15 12.5/65-18 17.5/65-20
23X8.50-12 10-15   12.5/70-16 15.5/70-18 16.9-24
5.50-15 12/65-15 10-16.5 15.5/70-20 18.4-24
7.50-15 33X12.5-15 12-16.5 42X17-20 16.9-28
55.5/80-57        

The variation in load caring capacity with operating speed
OPERATING SPEED L***
km/h mph  
STATIC STATIC 60%
CREEP CREEP 30%
4 2.5 15%
10 5 0
15 9 -13%
20 12 -
25 15 -20%
30 19  
35 22
40 25
45 28
50 30
55 34
60 37
65 40
70 44
75 47
80 50
80< 50<

Reference speed for calculating load variance
*** Except following sizes on the list  
  55.5/80R57 7.50-15 33X12.5-15 12-16.5
5.70-12 27X8.50-15 14.0/65-15 12.5/65-18
23X8.50-12 10-15   12.5/70-16 15.5/70-18
5.50-15 12/65-15 10-16.5 15.5/70-20
42X17-20 17.5/65-20 16.9-24 18.4-24
16.9-28 55.5/80-57    

Load-and-Carry Operations for Front End Loader Service
Service conditions of a loader is defined as "picking up material and relocating a short distance away, a maximum of 76m (250 feet) , one way, with a maximum speed of 10 km/h (5 mph)".  However , a loader can pick up a load and transport such load to another location and return unloaded for a longer distance.  This type of service is called Load-and-Carry operations.  Transportation usually occurs at speeds, up to 25 km/h (15 mph), and distances are limited.                 
The tires when used in Load-and-Carry operations may encounter heat problems especially on the front axle tires.  To avoid such problems, Bridgestone Recommends the following operating conditions.  For tires over 33" inch rim diameters, careful consideration is required to maximize tire life while considering Ton-Kilometer-Per-Hour (Ton-Mile-Per-Hour) limits.  Please consult a Bridgestone representative.  If you need to use the tire beyond this recommendation, please consult a Bridgestone representative.

Tread
Class
Inflation Pressure for Front Tires Load Capacity**
10km/h (5mph)
Maximum Cycle Distance (m) Allowable Average
Work-shift Speed (km/h)
Rim Diameter
29" and below 33" and above
L2, L3 Standard inflation Pressure
+
100kpa (15psi)
90% of
Standard load
85% of
Standard Load
1200 10
L4 500 3
L5 *** 300
L5S

** Standard load: Maximum permissible load at standard inflation pressure for respective tire size and star rating. 
Please refer to the load - inflation pressure table for loader and dozer service "10km/h (5mph) service".
  *** Not Permissible
The inflation pressure should not exceed 825kPa (120psi)

For L5/L5S tires, the following list of front tire sizes for front end loaders, it is permissible to increase inflation pressure up to 100kPa (15psi) above, with no increase in load.
(Maximum inflation pressure should not exceed 825 kPa (120psi).)    
15.5-25 23.5-25 29.5-29 40/65-39 50/65-51
17.5-25 26.5-25 35/65-33 41.25/70-39 55.5/80-57
20.5-25 29.5-25 37.25-35 45/65-45 65/65-57
 
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