Can I apply for a patent to design a new wheel hub shape?

You can apply for a utility model patent or an invention patent, which requires higher creativity. I wonder how complicated your design is.

Of course, you can also apply for a patent for design. All kinds of applications are patents with different protection time and strength, and the risk of invention patents being rejected is greater. The other two will almost certainly be authorized to obtain patent certificates.

I hope I can help you.