My factory produces wheels for years as follows: 

   1. Steel (Trailer, RV) Wheels:12-4,13-4.5,13-5.5,14-5,14.5-6 (Mobile Rim),14-6,14-7,15-5, 15-6,15-7,15-8,16-6 (or dual),16-6.5,16-7,16-8,17.5*6,17.5*6.75,22.5*8.25 & 22.5*9 etc.

a).Surface: Painted(white, black or silver), Chrome, E-coated & Galvanization etc.

   b).Patterns: 8(or 5) -Spoke, Modular, Blade or Comet etc.

   2. Steel (Auto Car) Wheels:14-5(JL),14-5.5 (Nissan),15-7(Benz),15-6,16-6.5,16-7 for Japan, Europe cars.

   3. alloy wheels from 12" to 26" ,with many types.

   4. We passed DOT testing. We can make other sizes/patterns wheels & OEM wheels.