tyre/tire selection

[zimluura]

all the shared wheel meshes should be updated in the data and art svns.

i fit the 350z with the its shared wheel mesh and it doesn't quite look right. i was going to move it's wheels outward a little, that will be easy, but it's something else. the mesh for the pentagonal_hub is very thin so how to handle the offset of the wheels is what needs to be considered.

sorta want to know some of how you guys are planning on the offset before i go and put oem wheels for each car (just in case i'll need to go through each blend file again.)

got the z06 updated with properly sized mazda wheels (wheels moved outward and lowered a little). will get its original wheels put in its directory soon.

==
a few different tire textures in the carparts/tire/texture directory. left the single tire texture in the wheel directory so as not to break anything until the code gets changed a bit.

at the moment tires are being mirrored as well as the wheel_edge. is there any way to make the wheel edge mirrored and the tire non-mirrored? i ask because the tread pattern, and arrows aren't symmetrical right now. but i think, with regard to open-wheel cars we will want the outside rim_edge to maybe have some detail that the inside wouldn't.

the part i'd intended to be the outside of the wheel_edge is currently on the inside. should i fix that in the mesh_gen functions? or is it very easy to rotate after they are called?