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Smaller wheels may be more comfortable and takeup less space, but the smaller the wheel, the moresteering effort required (more so on a car with no powersteering). For example, a large wheel and a deep seatmay make it difficult to get out of the car without a quick releasefeature.
In this manner, why can a larger steering wheel be easier than a smaller steering wheel?
the torque is larger for large diametersteering. Hence, it is easier to turn the steeringwheel of large diameter than the steeringwheel of small diameter with the same applied force. so It iseasier to turn the steering wheel of a largerdiameter than that of a smallerdiameter.
why are bigger steering wheels better?
So larger steering wheel means largerradius which means larger distance from axis therefore wehave larger steering wheel to reduce the force required forsteering. But now a days after power and hydraulicsteering has arrived even small wheel can do thejob.
A flat-bottomed steering wheel gives you alittle bit of space in terms of legroom. Another benefit of using aflat-bottomed steering wheel in race cars isto let the driver know if the wheels are straight or not,but that's only an added advantage and not a benefit of thesteering wheel by itself.