In a tractor wheel, why is the Disc polygonal in shape
(like a square, hexagon or octagon) whereas for Commercial
vehicles and Passenger Cars the wheel has a circular disc?

Answer Posted / shivaprakash

the disc designed for track width change, so from that
wheel disc and rim you can change for 4 steps of track
width, question was cutting on polygon shape make gap on rim
that all to pass out mud's and soil out during field application

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