This is easily done with Photo shop or some other photo program on your computer. I use CorelDraw which is easy to use. Basically you need to take a good side view image of the car. The bring that and scale the image up to the actual size of the vehicle or at least a size that you could measure the size of the wheel diameters. Now get an image of the wheel you want perferable a good straight on view and crop the image so the wheel is the only part you can see. Then overaly it on the vehicle image.
One thing you need to remember is that if you increase the size of the wheel and you keep the same aspect ratio of the tires the car will look more "Jacked up" or sit higher because you have the same series tire. You will need to go to a lower series of tire like a 45 , 40 or even a 35 series tire to achieve the same overall height of the tires. Not sure what you have now but it is easy to figure out. If you send me the spec i can give you the information, heck I'll even do the wheel overlay for you if you want. It is easy for me since i have all the tools. Just email me a good side view with the dimensions of the wheels and overall height of the tires.
Hope this helps, I love the prostreet look
