I think it would be cool to have a separate tab(like the vehicle parts configurations) specifically for wheels! It would show the main types of wheels for your car and you could select them there. And it would add alot more color options to the wheels (or even the ability for you to color the rims). Like for example: the Gavril D-series alloy rims with a black option, a white option or a gold option ECT....
I'm not entirely certain what you're proposing. Would you like an extra tab within the vehicle configuration menu (alongside the existing Parts, Tuning, Colour, and Save&Load tabs), or are you proposing the creation of an entirely new menu for configuring wheel & tire combinations?
I'm fairly certain a tab for the wheels with pictures is planned. Gabester has mentioned it before. Don;t know when we'll see it. https://www.beamng.com/threads/micro-blog-s-july-2015-to-march-2016.14715/page-19#post-283303
