this is pretty cool ,you can choose a hummer h2 and then different color and tint. then pick different wheels and tires.. gives you a good idea of what your hummer would look like with different wheels and tires. and after you pick a wheel you can change the sizes .and also raise and lower the h2 to see what it would look like lifted or lowered. also shows what the wheels look like in motion..kinda cool !check it out!
http://www.autowaretech11.net/nextwheels/wheelpros.htm