Making Tire pattern!

Got a question of a different kind today.

I got a smooth Motorbike style front-tire on which I would like to engrave a tire pattern.

What are the best methods to create the pattern and to carve it into the tire??
[:D]

And, yes, I am insane and nuts. [:p]

candle, and a needle or knife. thats how i would do it! im a pyro…hehehehe be careful though!! not too much heat…

Buy an after-market one !!!

HAHAHAHA