Attached Link: http://www.geocities.com/paulthepuzzles/Bikewheel.html

The linked tut is for a basic (spoked) bike wheel - but easily adapted for other vehicle types. Done with Wings :) There's only minor differences (no need to combine prior to weld, RMB mirror creates a separate object and multiple loopcut now ok) between the version used and current one. Probably of no interest, but it's there if you want to peruse same. pp