Good question

There are many multi-player 270deg wheel games....but most of them use multiple cabinets (think of just about all racing games since Daytona, and some besides).
I can't think of any that use the same cabinet tho. Most 270deg games are either chase or in-car view which would require split screen, and I don't recall any split screen arcade racing games. (I'm sure someone here can think of one...

)
Personally I think you'd be fine with just 1 270deg wheel: I think of OutRun, ChaseHQ series etc. - all 1 player games.