The term “dish’ refers to the distance between the hub of the wheel and a straight-edge placed across the rim of the wheel directly above the hub.
If you fit a deeply dished steering wheel instead of a flat one, the wheel’s rim will closer to the driver. And transversely a flat steering wheel will be further away.
There are many variances in the dish depth of aftermarket steering wheels, and you may find different hubs also offset the wheel different amounts.
This diagram shows the difference between a deeply dished steering wheel and a relatively flat wheel.
You might find that the original steering wheel does not sit at a comfortable distance form you when the seat is adjusted for your legs to reach the pedals, and so selecting the correct amount of dish can correct this making your driving experience more comfortable.
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