SECTION 2 -- CONTROLS, INSTRUMENTS AND OPERATION
2--66
Ground Speed Conversion Chart
The size of the rear tyres on your tractor may vary
from those shown in the ground speed charts. When
an alternative size of tyre is fitted, multiply the
ground speeds shown in the charts by the conversion
factors shown:
Models with Light Duty Rear Axle
Tyre Size
Factor Tyre Size Factor
18.4R--30 0.935 480/70R--34 0.968
12.4--32 0.839 480/70R--38 1.032
16.9R--34 0.968
540/65R--38 1.032
13.6R--38 0.968 -- -- -- --
16.9R--38 1.032 -- -- -- --
All Models with Heavy Duty Rear Axle
Tyre Size
Factor Tyre Size Factor
18.4R--30 0.879 480/70R--34 0.909
12.4--32 0.788
520/70R--34 0.939
16.9R--34 0.909 480/70R--38 0.970
18.4R--34 0.939 540/65R--38 0.970
13.6R--38 0.909 650/60R--38 1.000
16.9R--38 0.970 650/65R--38 1.061
20.8R--38 1.061 320/90R--50 1.061
18.4R--42 1.061 -- -- -- --
14.9R--46 1.079 -- -- -- --