Try different kinds of wheels to your vehicle and see how they would look like in real life. Select wheel from the list and place it on your vehicle, you can move the wheel around and change the size if needed. You can search wheels from existing selection or add wheels by:
1) Adding the wheel via menu and taking a picture with the camera, selecting picture from gallery or opening browser and selecting the picture anywhere from the internet
2) You can also add the picture outside the app by selecting image anywhere in internet or your local device and sharing it with the app or taking a picture with your camera and sharing it with the app
You can take a picture with the new wheels and save and share it. Resellers can be found from the list or you can search for local resellers for the specific wheel.