Question

Why are the rear wheels of a tractor very wide?​

Answer 1

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Because the rear tyres have a much larger surface area (they are larger in diameter and width), the weight of the tractor is distributed across a larger area and the tyres don't compress the soil as much (plants won't grow as well in compacted soil).

Answer 2

Answer:

Because the rear tyres have a much larger surface area (they are larger in diameter and width), the weight of the tractor is distributed across a larger area and the tyres don't compress the soil as much (plants won't grow as well in compacted soil).