steel wheel center caps?
 

So I got the 16" x 6.5" steel wheels for my winter tires off tire rack. I am wondering if it is possible to get center caps for these wheels, just to keep salt off the nut and threads in the rear hubs? I really would rather that area not get super corroded if I can avoid it, for obvious reasons :P

Does anyone know if they sell just a plastic cap that either pushes in or threads on? I guess I could machine one, but really that's kind of a hassle.

There are plenty of hub cap options for steel wheels. Some that cover the entire face, some that cover only the center part. Tire Rack has options if I recall correctly.

Not may options for steel wheel center caps, and hard to finde ones that will fit right. I'm working on 3d printing a set for the winter wheels on our Fit.