BS AU 50-1.4.5a:1996 - Tyres and wheels. Tyres. Agricultural tractor and machine tyres - Specification for designations, dimensions, marking and tyre/rim coordination for metric series tyres
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This part of ISO 7867 establishes the size designation,
the dimensional calculation and the markings of the
metric series of tyres primarily intended for use on
agricultural tractors and machines. Tyre and rim co-
ordination is also given.
It applies to bias-belted, diagonal and radial tyres
mounted on 5° tapered rims, as specified in ISO 4251-3.
Only established rim diameters and widths within the
ranges in tables 1 and 2 are recommended.
This part of ISO 7867 also applies to different con-
cepts and types of tyres and rims; in this case, how-
ever, appropriate rim/section ratios K₁ and coefficients
K₂, a and b will be established and added.
Dimensions of existing rims are specified in ISO 4251-3.
NOTE 1 Code (ply rating) marked series of tyres and rims
for agricultural tractors and machines are specified in
ISO 4251-1, ISO 4251-2 and ISO 4251-5. Service descrip-
tion (load index-speed symbol) marking of the existing
series of agricultural tractor-drive-wheel tyres is given in
ISO 8664.
BS AU 50-1.4.5a:1996 - Tyres and wheels. Tyres. Agricultural tractor and machine tyres - Specification for designations, dimensions, marking and tyre/rim coordination for metric series tyres