Here is an example of a how-to with the the right tools at your disposal, Take the tire example I mentioned above, How will you create it? Some will say, "Start with a Torus" while others may start with a cylinder with a boolean subtraction from the middle. I personally do it differently. Shroud's tire with tread (radial) 1. I decide on the circumference of my tire and make a box equal length to the circumference. 2. Then I will decide on the width creating the box with more than 32 segments. 3. Then I would go into photoshop and create a displacement map of the tread that I want or some real tread that I scanned and grayscaled from a picture. 4. I apply my displacement map and delete the redundant planes and polygons. 5. I use a boolean subtract lengh-wise the box so I can make the tire hollow for future manipulation ie a blowout! 6. I decide on pertrusion near the rim or no pertrusion at all. 7. I bend the box 360 degrees into the donut shape of the a tire 8. I weld points and merge polygons and wala! a tire with designer treads There you have it. My way in 8 steps which is just as effective as the torus and the boolean cylinder method. All of this comes from experience and knowing the tools you are working with. Good Luck Shroud