Is it leather wrapped or urethane (plastic)?
The urethane (plastic) wheels will disintegrate over time with contact with the oils from your hands.
Unfortunately all manufactures use them, and I've personally seen it happen on multiple vehicles.
There are only really two things that you can do to avoid this. If you are buying, get a leather wrapped steering wheel. I ALWAYS do for this reason, and actually upgraded to leather upholstery just to get it in my Crosstrek. If you already own a vehicle that has this then you'll probably have to get a steering wheel cover.