Soft muddy ground needs wide, deeply grooved tyres on large wheels to keep the axles clear of the ground. This increases the surface area of the tyre in contact with the ground.
The greater the surface area, the less likely the wheel will sink into sandy or muddy ground and get stuck. This is because a larger surface area reduces the pressure.
Wet surfaces need tyres with small grooves (called the tread). Water gets squeezed into the grooves, allowing the rubber to grip the drier surface.
Small wheels give excellent manoeuvrability but need a smoother surface. Big
wheels are less easy to control but are more efficient over rougher terrain.
That's the technology behind wheels. What you need to know is that the wheels available to Robot Constructor are medium sized and with a fine tread!
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What good are wheels?
