Simple Off-road Tire

We start the model by creating a plane, in the top view, with the following dimensions: Length: 80 Width: 120. Length and width segments should be set to 4.



Convert the plane to editable poly and move the vertices like in the steps shown in the next picture. After that select all of the vertices and click weld in edit vertices section of editable poly. This will get rid off some unnecessary polygons and vertices.



In the top view select the middle row of vertices and move the upwards (y axis) by 5 units.




Select the polygons from the next picture and extrude them by 20 units.



Next, clone the plane 2 times and put those copies to the left and right of the original. Then rotate them each by 180 degrees.



Select all 3 planes and convert them to editable poly. Then select any one of them and attach the other two to it. Now select the red vertices from the picture and weld them together or select 2 at the time and then collapse them (right click on the selected vertices -> collapse).



From the top view port, select the right edge of the model and shift + drag it by 10 units to the right. Do that with the other side as well.



Move the right and left edges downward by 10 units.



Select the edges from the next picture and chamfer them by 2.5 units.



Now, make 20 copies of the plane and arrange them like in the picture. Don’t forget to attach them all together and to weld their vertices. Just like before.



Apply the bend modifier with the following settings: Angle: 74.0, Bend Axis: X.



Next, apply another bend modifier to the model, but with the different settings. This bend actually makes the model look like a tire. The settings are: Angle: 360, Direction: 270, Bend Axis: Y.



Select the inner edges of the tire…



... and shift + scale them inwards, twice.



Select the polygons colored red in the picture and move them outwards a little.



Move the inner edge to the inside of the tire to complete the tire. Don’t forget to do all this things also on the other side of the tire.



To make a wheel rim, just continue to shift + scale/move the inner edges.



To fill the void in the middle, separately create some wheel spokes and then move them into the position.



Here’s a test render of one tire I got by using this method. I just put some basic materials on it and rendered with gi.



And for the end, let me show you a neat thing you can get with this tire, if you turn off the first bend modifier. You get this fat, wide tire, suitable for a model of a rc car or some really rugged off-road vehicle.