TABLE C
Radial Ply
Metric Agricultural Tractor Drive Wheel Tire
TIRE TYPE NOMENCLATURE
Code No.

Tire Type

R-1
R-1W
Drive Wheel, Regular Tread
Drive Wheel, Wet Traction Tread
 
FOR A8 AND B SPEED SYMBOL TIRES
TIRES USED AS SINGLES

Basic Tire Load Ratings for Tire Selection | MAXIMUM SPEED 30 MPH (50 KM/H)
Tire
Size
Designation
LOAD LIMITS AT VARIOUS COLD INFLATION PRESSURES
psi
kPa
6
40
9
60
12
80
15
100
17
120
20
140
23
160
26
180
29
200
32
220
35
240
38
260
41
280
44
300
46
320
49
340
52
360
230/95R48lbs.14301710204022702600291032003300342036403740386040804180440045404680
230/95R48kg.65077592510301180132014501500155016501700175018501900200020602120
230/95R48LI    114 121 123 126 129 132 134
280/85R24lbs.1230148017101930 2200 2470 2680           
280/85R24kg.560670775875 1000 1120 1215           
280/85R24LI     108   115           
290/95R34lbs.16502040234026803000330036403860408041804300      
290/95R34kg.750925106012151360150016501750185019001950      
290/95R34LI    119 125 129 131      
320/85R24lbs.1480182020902400268030003300          
320/85R24kg.6708259501090121513601500          
320/85R24LI    115 122          
320/85R28lbs.1610193022702600 2910 3200 3520           
320/85R28kg.73087510301180132014501600          
320/85R28LI    118 124          
320/85R34lbs.17602150247028303200352038604080430044004540      
320/85R34kg.800975112012851450160017501850195020002060      
320/85R34LI    121 127 131 133      
320/85R38lbs.18702270260030003420374040804300454046804800508052005520568058406000
320/85R38kg.8501030118013601550170018501950206021202180230023602500257526502725
320/85R38LI    123 129 133 135 138 141 143
320/90R42lbs.20902470291033003740418045404800494052005360      
320/90R42kg.9501120132015001700190020602180224023602430      
320/90R42LI    126 133 136 139      
320/90R46lbs.21502600300034203860430048005080520053605520584061506400660068006950
320/90R46kg.9751180136015501750195021802300236024302500265028002900300030753150
320/90R46LI    127 135 138 140 144 146 148
320/90R50lbs.227027603200364040804540494052005520568058406150640066006950  
320/90R50kg.103012501450165018502060224023602500257526502800290030003150  
320/90R50LI    129 136 140 142 145 148  
320/90R54lbs.234028303300374043004680520055205680584060006400660069507150  
320/90R54kg.106012851500170019502120236025002575265027252900300031503250  
320/90R54LI    131 138 141 143 146 149  
340/85R24lbs.1650198022702600300033003640          
340/85R24kg.75090010301180136015001650          
340/85R24LI    119 125          
340/85R28lbs.1760209024702830320035203860          
340/85R28kg.80095011201285145016001750          
340/85R28LI    121 127          
380/70R24lbs.1650198022702600 3000 3300 3640           
380/70R24kg.75090010301180 1360 1500 1650           
380/70R24LI     119   125           
380/80R38lbs.22702760320036404180454050805360552056805840      
380/80R38kg.10301250145016501900206023002430250025752650      
380/80R38LI    130 137 140 142      
380/85R24lbs.1930234027603080352038604300          
380/85R24kg.875106012501400160017501950          
380/85R24LI    124 131          
380/85R28lbs.2090254029103300374041804540          
380/85R28kg.950115013201500170019002060          
380/85R28LI    126 133          
380/85R30lbs.2150260030003420386043004800          
380/85R30kg.975118013601550175019502180          
380/85R30LI    127 135          
380/85R34lbs.2270276032003640408045405080          
380/85R34kg.1030125014501650185020602300          
380/85R34LI    129 137          
380/90R46lbs.28303300386044005080552061506400680069507150      
380/90R46kg.12851500175020002300250028002900307531503250      
380/90R46LI    137 144 147 149      
380/90R50lbs.29103520408046805200584064006800695074007600      
380/90R50kg.13201600185021202360265029003075315033503450      
380/90R50LI    138 145 148 151      
380/90R54lbs.30003640430048005520600066006950740076007850      
380/90R54kg.13601650195021802500275030003150335034503550      
380/90R54LI    140 146 150 152      
385/85R34lbs.2340283033003740418044005200536056805840600064006600    
385/85R34kg.1060128515001700190020002360243025752650272529003000    
385/85R34LI    130 138 141 143 146    
420/70R24lbs.1930227026803080 3420 3860 4180           
420/70R24kg.875103012151400 1550 1750 1900           
420/70R24LI     123   130           
420/85R24lbs.2270276032003640 4080 4540 5080           
420/85R24kg.1030125014501650 1850 2060 2300           
420/85R24LI     129   137           
420/85R26lbs.2340283033003740430046805200          
420/85R26kg.1060128515001700195021202360          
420/85R26LI    131 138          
420/85R28lbs.2470291034203860440049405360          
420/85R28kg.1120132015501750200022402430          
420/85R28LI    132 139          
420/85R30lbs.2540300035204080 4540 5080 5520           
420/85R30kg.1150136016001850 2060 2300 2500           
420/85R30LI     133   140           
420/85R34lbs.2680320037404300 4800 5360 5840           
420/85R34kg.1215145017001950 2180 2430 2650           
420/85R34LI     135   142           
420/85R38lbs.2830342039604540 5080 5680 6150           
420/85R38kg.1285155018002060 2300 2575 2800           
420/85R38LI     137   144           
420/90R30lbs.2680320037404180480053605840          
420/90R30kg.1215145017001900218024302650          
420/90R30LI    135 142          
460/85R30lbs.2910352040804680 5200 5840 6400           
460/85R30kg.1320160018502120 2360 2650 2900           
460/85R30LI     138   145           
460/85R34lbs.3080364043004940 5520 6150 6800           
460/85R34kg.1400165019502240 2500 2800 3075           
460/85R34LI       147           
460/85R38lbs.3200386045405200 5840 6400 7150           
460/85R38kg.1450175020602360 2650 2900 3250           
460/85R38LI     142   149           
480/65R24lbs.29103520408046805360584064006800715074007600      
480/65R24kg.13201600185021202430265029003075325033503450      
480/65R24LI    139 145 149 151      
480/65R24lbs.2150260030003420386041804540          
480/65R24kg.975118013601550175019002060          
480/65R24LI    127 133          
480/65R28lbs.2270276032003640408045404940          
480/65R28kg.1030125014501650185020602240          
480/65R28LI    129 136          
480/70R28lbs.254030003520408045405080552058406150640066006800715074007600  
480/70R28kg.115013601600185020602300250026502800290030003075325033503450  
480/70R28LI    133 140 144 146 149 151  
480/70R30lbs.260030803640418046805200568060006400660068006950740076007850  
480/70R30kg.118014001650190021202360257527252900300030753150335034503550  
480/70R30LI    134 141 145 147 150 152  
480/70R34lbs.276033003860440049405520600064006600695071507400785080508550  
480/70R34kg.125015001750200022402500272529003000315032503350355036503875  
480/70R34LI    136 143 146 149 152 155  
480/70R38lbs.2910352040804680 5200 5840 6400           
480/70R38kg.1320160018502120 2360 2650 2900           
480/70R38LI     138   145           
480/80R30lbs.2910352040804680536058406400          
480/80R30kg.1320160018502120243026502900          
480/80R30LI    139 145          
480/80R38lbs.3300396045405200584066007150          
480/80R38kg.1500180020602360265030003250          
480/80R38LI    142 149          
480/80R42lbs.342040804800552061506950760080508250        
480/80R42kg.155018502180250028003150345036503750        
480/80R42LI    144 151 154        
480/80R46lbs.36404300508056806400715078508250855091009350      
480/80R46kg.16501950230025752900325035503750387541254250      
480/80R46LI    145 152 155 158      
480/80R50lbs.37404540520060006800760082508550910093509650      
480/80R50kg.17002060236027253075345037503875412542504375      
480/80R50LI    147 154 157 159      
480/85R34lbs.3300396045405200584066007150          
480/85R34kg.1500180020602360265030003250          
480/85R34LI    142 149          
520/85R38lbs.3860468055206150695078508550          
520/85R38kg.1750212025002800315035503875          
520/85R38LI    148 155          
520/85R42lbs.4080494056806600740082509100          
520/85R42kg.1850224025753000335037504125          
520/85R42LI    150 157          
520/85R46lb.4300508060006800760085509350          
520/85R46kg.1950230027253075345038754250          
520/85R46LI    151 158          
540/65R24lbs.2600308036404180480050805520          
540/65R24kg.1180140016501900218023002500          
540/65R24LI    135 140          
540/65R28lbs.2760330038604400508055205840          
540/65R28kg.1250150017502000230025002650          
540/65R28LI    137 142          
540/65R30lbs.28303420396045405200568060006400680069507400      
540/65R30kg.12851550180020602360257527252900307531503350      
540/65R30LI    138 143 147 150      
540/65R38lbs.3200386044005080584061506800          
540/65R38kg.1450175020002300265028003075          
540/65R38LI    142 147          
600/65R28lbs.3300386045405200584064006800          
600/65R28kg.1500175020602360265029003075          
600/65R28LI    142 147          
600/65R38lbs.374045405200600068007400805085508800935096509900105001070011400  
600/65R38kg.170020602360272530753350365038754000425043754500475048755150  
600/65R38LI    147 153 156 159 162 165  
600/70R30lbs.36404400520058406600740078508550880091009350990010500    
600/70R30kg.1650200023602650300033503550387540004125425045004750    
600/70R30LI    146 152 156 158 162    
620/70R42lbs.4540536064007150805091009900          
620/70R42kg.2060243029003250365041254500          
620/70R42LI    153 160          
650/65R38lbs.4180508058406800760082509100          
650/65R38kg.1900230026503075345037504125          
650/65R38LI    151 157          
650/75R32lbs.45405520640074008250910099001070011000114001200012300128001360013900  
650/75R32kg.206025002900335037504125450048755000515054505600580061506300  
650/75R32LI    154 160 164 167 169 172  
710/70R38lbs.53606400740085509650107001170012300128001320013600      
710/70R38kg.24302900335038754375487553005600580060006150      
710/70R38LI    159 166 169 171      
710/70R42lbs.55206600785088009900110001230012800136001390014300      
710/70R42kg.25003000355040004500500056005800615063006500      
710/70R42LI    160 168 171 173      
710/75R34lbs.536064007600855096501070012300          
710/75R34kg.2430290034503875437548755600          
710/75R34LI    159 168          
800/65R32lbs.53606600760088009650107001200012300128001360013900      
800/65R32kg.24303000345040004375487554505600580061506300      
800/65R32LI    159 1675600169 172      
800/70R38lbs.64007600910010200117001280014300          
800/70R38kg.2900345041254625530058006500          
800/70R38LI    166 173          
900/50R42lbs.5680680078509100102001140012300          
900/50R42kg.2575307535504125462551505600          
900/50R42LI    161 168          
900/60R32lbs.584071508250935010700117001280013900143001520015700      
900/60R32kg.26503250375042504875530058006300650069007100      
900/60R32LI    163 169 173 176      
NOTES: 1: Boldface loads are maximum for the Load Index shown.
2: For shipping purposes, tire inflation pressures may be increased to 30 psi (210 kPa).
Inflation pressure must be adjusted to correct operation inflation before operation.
3: At higher transport speeds (above 20 mph) and lower pressures (less than 12 psi) increased inflation pressure may be required for vehicle stability.
4: When used as Duals, tire loads must be reduced 12%, when used as Triples, tire loads must be reduced 18%.
5: The above loads are also applicable to equipment, including hillside combines, operating on slopes above 11° (20% grade). Load adjustments below 20 mph (30 km/h) in the adjoining table do not apply when operating on slopes greater than 11° (20% grade).
6: For hillside operations, earthmoving operations, and for moldboard plowing with single drive wheel tires in the furrow, consult tire manufacturer for inflation pressure recommendations.
7: For cyclic loading field service, see Table F-I. For tire sizes not shown, see Note 3 on Table F-1.
8 For transport service and operations, which do not require sustained high torque, the table to the right applies.


MAX. SPEED

% CHANGE IN ABOVE

CHANGE IN INFL. PRESSURE

Statationary +189% +6 PSI (40kPa)
10 MPH / 15 KM/H +34% (except hillside combines) NONE
15 MPH / 25 KM/H +11% (except hillside combines) NONE
20 MPH / 30 KM/H +7% NONE
25 MPH / 40 KM/H NONE NONE
30 MPH / 50 KM/H NONE NONE
FOR RIM AND WHEEL LOAD INFORMATION, SEE IMPORTANT NOTES IN CHARTS I AND II IN GENERAL FARM TIRE INFORMATION