[Postsedan]

That is a good looking wheel...she must have come off of a car early in life to have such good grain on her....perhaps in a heavy front end crash was the cause of the severe large crack? I use a 3M Panel Bond Gun with a long tip to get into tight places, the gun is not cheap......but you can also buy rather inexpensive small tubes of expoxy at your local hardware store. Fill the crack with baby steps, or separate layers.....this will make the repair much stronger, especially since you have a larger crack. Use green tape to sesure the expoxy, as it likes to run. The hardest part will be to duplicate the grain on the wheel, this is where I use a dremel tool. I suggested you practice on duplicating this art before you actually try it on the wheel, as you only have one chance to get it right.
Fairly easy to do.

Good luck,
Dan