Originally Posted by underscore
To touch back on the steering wheel sizes, my cars have wheels that were OEM options in Japan and they're both smaller sizes than the basic wheel. They're made by MOMO and the horn buttons say "MOMO for Toyota" but there's nothing on the wheels indicating what they are. Now there's no way in hell I could ever find the paperwork to prove these wheels are an OEM option so am I basically screwed if I ever got a VI for them (even though I think they're legal)?
I wouldn't worry about it. Its OEM and its basically at the inspector's discretion. Have yet to hear about inspectors pulling out measuring tape and failing cars for it.
I'm pretty sure the OP here is leaving a few details out about his encounter with the police, generally the police don't usually hand out VI's for steering wheels, JDM or not.