This tutorial will teach you how to create Car Paint Rendering using 3ds max 6.0 and mental ray.
Step 1Start 3ds max, first thing we need is to change the default renderer of max, open the Rendering dialogue box.

Step 2From Choose Renderer Dialogue box choose Mental Ray, and click ok.
Step 3The Rendering dialogue box will change with the addition of more and different options.
Step 4Now its time to make Car Paint material. Open the Material Editor, and click the Standard Button.
Step 5From Material Map/Browser Select Shellac, and click ok.
Step 6Discard the Old Material.
Step 7After these steps the material editor will look like this, Click the Base material to open its editing options.
Step 8Click the diffuse map slot, and select falloff from Material/map browser.

Step 9Change the black and white colors to the colors shown in the picture below.
Top Color is R=200,G=0,B=0 and bottom Color is R=16,G=0,B=0.
Step 10Now modify the Curve in Mix curve option, as shown in the figure.
Step 11Click go to parent button and set the Specular level and Glossiness values as shown in the figure.
Step 12Click go to parent button once more and then click the shellac material slot.
Step 13Click on the standard material option, and choose Raytrace as new material.

Step 14Again click the diffuse map slot and select Falloff from material/ map browser. This time we will use Fresnel options instead of default Towards/Away, also change the Index of refraction option to 2.5.
Step 15Click go to parent change the diffuse color to black, and also change other values as shown.
Step 16Click go to parent once more and change the Shellac color blend value to 85.

Now its time to finally set our scene with light and Car
Step 17Apply the Material to the body of car.
Step 18Select the Skylight by click the light and then Skylight button.
Step 19Create sky light on the scene and set its multiplier value to 1.5.
Step 20Creat a plane over the car, as show in the fig, just for reflections.
Step 21Right click the plane over the Car and select its properties, Uncheck the boxes shown in the fig.
Step 22Now its time to make the material for the plane above the car, Select the diffuse map slot and select Output from the Material/Map Browser.

Step 23Change the RBG level value to 3.0.
Step 24Click go to parent and Change the diffuse color to pure white and self illumination to 100.
Step 25Open Render Scene Dialogue box and change the settings as shown in the fig.


We're done!