[REQ] Wheels

[stonebreaker]

Can someone show me how to make wheels like these (mars rover and the last vehicle)?

http://www.conceptart.org/forums/showthread.php?t=146478

PLEASE!!!

[boofredlay]

Here is a quick tut I made a while back that might help you.
http://forums.sketchucation.com/viewtopic.php?f=20&t=797

[stonebreaker]

Thanks! this helps a lot. but how would you made the bevel wheel?