| Std NOWRAP | NARROW | 90/95 | 80/85 | 70/75 | 65 | LARGE/LOW PRESS | FLOTATION | 650R16 | | | | 260/70R16 | | | | 7.50R16 | | | | 260/70R16 | 320/65R16 | 11LR16 | | | | | | 280/70R16 | | | | 7.50R18 | | | | 260/70R18 | 320/65R18 | | | | | | | 280/70R18 | | | | 7.50R20 | | | | 260/70R20 | 320/65R18 | | | | | | | 280/70R20 | | | | 10.5R18 | | | | 300/70R18 | 340/65R18 | 275/80R18 | | 9.5R20 | | | 240/85R20 | 300/70R20 | | 275/80R20 | | | | | | 310/70R20 | | | | 11.2R20 | | | | 320/70R20 | | | | 12.4R20 | | | 320/85R20 | 360/70R20 | 420/65R20 | 335/80R20 | | 13.6R20 | | | | 380/70R20 | | | | 8.3R24 | | | 220/85R24 | | | 375/75R20 | | 9.5R24 | | | 240/85R24 | | | 405/70R20 | | 11.2R24 | | | 280/85R24 | 320/70R24 | 420/65R20 | 425/75R20 | | 12.4R24 | 8.3R22 | | 320/85R24 | 360/70R24 | 420/65R24 | 425/75R20 | | 13.6R24 | 8.3R32 | 210/95R32 | 340/85R24 | 380/70R24 | 440/65R24 | 445/70R24 | 42x25.00-20 | | | | | 400/70R24 | | | | 14.9R24 | 8.3R32 | 230/95R32 | 380/85R24 | 420/70R24 | 480/65R24 | 17.5LR24 | | | 9.5R32 | | 380/85R34 | 460/70R24 | | | | 16.9R24 | 9.5R32 | 270/95R32 | 420/85R24 | 480/70R24 | 540/65R24 | 19.5LR24 | 48x25.00-20 | | 11.2R32 | 210/95R36 | | | | | | | 9.5R36 | 230/95R36 | | | | | | 14.9R26 | 11.2R32 | 210/95R36 | | | 440/65R28 | | | 16.9R26 | 11.2R32 | 210/95R36 | 420/85R26 | 480/70R26 | 540/65R26 | | | 18.4R26 | 11.2R36 | 180/95R40 | 460/85R26 | 520/70R26 | | 580/70R26 | | | 9.5R40 | | | | | | | | 11.2R38 | | | | | | | 9.5R28 | | | | | | | | 11.2R28 | | | | 320/70R28 | | | 42x25.00-20 | 12.4R28 | 9.5R32 | 230/95R32 | 320/85R28 | 360/70R28 | 420/65R28 | 480/65R24 | | | | | | | | 17.5LR24 | | 13.6R28 | 9.5R32 | 270/95R32 | 340/85R28 | 380/70R28 | 440/65R28 | 540/65R24 | 48x25.00-20 | | 11.2R32 | 210/95R36 | | | | 19.5LR24 | | 14.9R28 | 11.2R32 | 230/95R36 | 380/85R28 | 420/70R28 | 480/65R28 | | 48x31.00-20 | | 9.5R36 | 210/95R36 | | | 480/70R26 | | | | | 180/95R40 | | | | | | 16.9R28 | 9.5R36 | 290/95R34 | 420/85R28 | 480/70R28 | 540/65R28 | 580/70R26 | 800/50-25 | | 11.2R36 | 320/95R34 | 320/85R34 | 520/70R26 | | | 54x31.00-25L | | 11.2R38 | 270/95R36 | | | | | | | | 230/95R40 | | | | | | 14.9R30 | 9.5R36 | 180/95R40 | 380/85R30 | 420/70R30 | | | | | 11.2R36 | | | | | | | | 11.2R38 | | | | | | | 16.9R30 | 11.2R36 | 270/95R38 | 420/85R30 | 480/70R30 | 540/65R30 | 600/65R28 | 54x37.00-25 | | 9.5R40 | 420/90R30 | 320/85R36 | | 600/65R28 | 620/70R26 | | | 11.2R38 | 230/95R40 | | | | | | | | 180/95R40 | | | | | | 18.4R30 | | 210/95R44 | 460/85R30 | 520/70R30 | | 600/65R28 | | | | | 320/85R38 | | | | | | | | 340/85R36 | | | | | | | | 385/85R34 | | | | | 12.4R32 | 11.2R32 | 210/95R36 | | | | | | | 9.5R36 | | | | | | | 24.5R32 | | | | 650/75R32 | | | | 30.5LR32 | | | | | | 800/65R32 | | 16.9R34 | 8.3R44 | 320/90R42 | 420/85R34 | 480/70R34 | 540/65R34 | 600/65R32 | | | 9.5R44 | 230/95R44 | 340/85R38 | 500/70R34 | | 1000/50R25 | | | | | 380/80R38 | | | 750/65R26 | | | | | | | | 600/70R28 | | 18.4R34 | 9.5R44 | 320/90R42 | 460/85R34 | 520/70R34 | 600/65R34 | 620/75R30 | 66x43.00-25 | | 11.2R44 | 230/95R48 | | | | 600/70R30 | 66x44.00-25 | | 9.5R48 | 270/95R44 | | | | 1050/50R25 | | 13.6R36 | 11.2R38 | | | | | | | | 9.5R40 | | | | | | | | 8.3R44 | | | | | | | 13.6R38 | 11.2R38 | | | | | | | | 9.5R40 | | | | | | | | 8.3R44 | | | | | | | | 9.5R44 | | | | | | | 15.5R38 | 8.3R44 | | | | 540/65R34 | | | | 9.5R44 | | | | | | | 16.9R38 | 11.2R44 | 320/90R42 | 420/85R38 | 480/70R38 | 540/65R38 | 23.1R30 | 66x43.00-25 | | 9.5R48 | 230/95R48 | | | | 620/75R30 | 67x34.00-25 | | | 230/95R38 | | | | | | 18.4R38 | 12.4R46 | 320/90R46 | 460/85R38 | 520/70R38 | 600/65R38 | 650/75R32 | 68x50.00-32 | | 11.2R48 | 300/95R46 | 480/80R38 | | | | | | | 270/95R48 | | | | | | 20.8R38 | 12.4R52 | 380/90R46 | 420/85R38 | 580/70R38 | 650/65R38 | 800/65R32 | 73x44.00-32 | | | 320/90R50 | 520/85R38 | | | 650/75R34 | | | | 300/95R52 | | | | 680/75R32 | | | | 320/90R54 | | | | 1050/50R32 | | | | | | | | 620/75R34 | | | | | | | | 620/70R38 | | 18.4R42 | | | 480/80R42 | | | | | 20.8R42 | 12.4R54 | 320/90R54 | 520/85R42 | 580/70R42 | 650/65R42 | 710/70R38 | 78x45.00-32 | | | 270/95R54 | | 620/70R42 | | 710/70R34 | 76x50.00-32 | | | 380/90R50 | | | | 900/50R42 | | | | | | | | 710/75R34 | | 16.9R46 | | | 420/80R46 | | | | | 18.4R46 | | | 480/80R46 | | | | | 20.8R46 | | | 520/85R46 | 710/70R42 | | 800/70R38 | | 18.4R50 | | 380/90R54 | 480/80R50 | | | | |
| MILLIMETRIC SIZE TIRES
The marking of some farm tires are millimetric
and the service description is load index and
speed symbol. This marking conforms to what is
currently used for passenger, truck,
agricultural and earth-mover tires.
EXAMPLE: TIRE SIZE: 710/70R-38 166A8“710” tire section width in millimeters
“70” aspect ratio
> “R” radial construction
38 rim diameter in inches
“166” load index
> “A8” speed symbol 1 inch = 25.4 millimeters = 2.54 centimeters
1 foot = 30.48 centimeters = .3048 meters
1 mile = 1609.3 meters = 1.6093 kilometers
1 mile = 5280 feet = 1760 yards
1 square inch = 6.4516 square centimeters
1 square foot = 144 square inches
1 square yard = 9 square feet
1 square mile = 640 acres
1 hectare = 2.471 acres
1 gallon water = 8.3453 pounds of water
1 U.S. gallon = 3.785 liters
1 peck = 8 quarts (dry)
1 bushel = 4 pecks (U.S.)
1 lbm = .4536 kilogram
1 lbf = 4.45 Newtons
1 psi = 6.895 kilopascal (kPa) = .06895 bar
INTERNATIONAL
SPEED SYMBOLS | | Speed Symbols | Speed Category
(Km/h) | Speed Category
*(MPH) | | A1 | 5 | 2.5 | | A2 | 10 | 5 | | A3 | 15 | 10 | | A4 | 20 | 12.5 | | A5 | 25 | 15 | | A6 | 30 | 20 | | A7 | 35 | 22.5 | | A8 | 40 | 25 | | B | 50 | 30 | | C | 60 | 35 | | D | 65 | 40 | | E | 70 | 43 | | E | 70 | 43 | | F | 80 | 50 | | G | 90 | 55 |
|