GENERAL TECHNICAL INFORMATION


 


     Agricultural and Industrial Tyres

 
Tyre Size Correspondence

STANDARD
SERIES		 STANDARD
SERIES /85 		WIDE
SERIES /70 		EXTRA LARGE
SERIES /65		 NARROW
SERIES /95		 TWIN
SERIES
6.50-16   260/70R16      
9.0/75-16   260/70R16      
250/80-16   280/70R16      
7.50-18   280/70R18      
8.00R20   260/80R20      
9.5R20   300/70R20      
11.2R20 280/52R20 320/70R20      
12.4R20 320/85R20 360/70R20      
11.2R24 280/85R24 320/70R24      
12.4R24 320/85R24 360/70R24     400/60-26.5*
13.6R24 340/85R24 380/70R24 440/65R24   400/60-26.5*
14.9R24 380/85R24 420/70R24 480/65R24 230/95R32* 500/60-26.5*
16.9R24 420/85R24 480/70R24 540/65R24    
16.9R26   480/70R26     600/55-26.5*
11.2R28 280/85R28 320/70R28      
12.4R28 320/85R28 360/70R28   360/95R32* 500/60-26.5*
13.6R28 340/85R28 380/70R28 440/65R28    
14.9R28 380/85R28 420/70R28 480/65R28 230/95R36* 600/55-26.5*
16.9R28 420/85R28 480/70R28 540/65R28   600/55-30.5*
14.9R30 380/85R30 420/70R30      
16.9R30 420/85R30 480/70R30 540/65R30   600/60-30.5*
      600/65R28   750/50-30.5*
18.4R30 460/85R30 520/70R30   210/95R44*  
16.9R34 420/85R34 480/70R34 540/65R34 230/95R44*  
18.4R34 460/85R34 520/70R34 600/65R34   700/55-34*
13.6R38 340/85R38        
14.9R38 380/85R38        
16.9R38 420/85R38 480/70R38     600/60-38*
18.4R38 460/85R38 520/70R38 600/65R38 270/95R48* 650/60-38*
20.8R38 520/85R38 580/70R38 650/65R38   700/65-38*
          850/50-38*
20.8R42 520/85R42 580/70R42 650/65R42 270/95R54* 750/65-38*
    620/70R42 710/70R38*   850/55-42*
  650/85R38 710/70R42*      
              *This solution requires replacement of the rim.


 

Tractor Tyre Marking

1 Manufacturer's Name
TM800 2 Product Name
600 3 Nominal section width (in mm)
65 4 Ratio between height of sidewall (H) and nominal section width (S). This indicates the technical series of the tyre. (80, 85,70,65,95)
R 5 Radial construction tyre. Cross-ply tyres are marked with a hyphen instead of the letter R (ie 23.1-26)
38 6 Rim diameters
157 7 Index indicating load carrying capacity for fitment.
A8 8 Speed symbol. Tyre's maximum speed in relation to the load capacity allowed by the load index.
Tubeless 9 Tyre without a tube. Tubed tyres are marked 'Tube type' or nothing.
  10 The arrow indicates the direction in which the tyre rotates when the vehicle is in normal working conditions. Another example of size description ie 7.50-16 8PR
7.50   Nominal section width (in inches)
-   Cross-ply construction tyre
16   Rim diameter
8 PR   "Carcass resistance index (it usually appears on the cross-ply tyres only,  while in the radial the load carrying conditions capacity index is shown).

 

 

Tyre Marking

A series of numbers and codes internationally used exist for the identification of tyre structures, dimensions and main applications. This group of codes and numbers is collectively known as the "markings" and permits precise identification of the tyre. The drawing gives an example of the markings as they appear on an agricultural tyre.