tire detail

http://i139.photobucket.com/albums/q290/broadcast321/tire_detail.jpg

how do they make the lettering, is it modeled or a bump map?

also, how is the detail on the tread done?

You can make the text with a bump map and using the follow active quads script bundled with Blender for UVmapping.

The tread can be done by making a single small section of tread, duplicating it into a line line of sections then using the warp tool to warp it into a spherical shape.

I made a tire today…still need to figure out how to make the lettering and the marks on the tread.

http://i139.photobucket.com/albums/q290/broadcast321/first_tire.jpg