I see a common denominator in these posts. You need at least 3 alcoholic drinks in you before your hand becomes steady enough to paint the stripes. I had forgotten about there also being a pinstripe on the cab beltline also.....
I did 2 of my 15" rims by taping with masking tape after using a large compass to draw in lines for the pinstripes. They wasn't too bad, but I did have to go back and touch up a few places where the paint creaped back under the tape.....
Biggest problem with taping is if the rim has some pits in the metal....
Thanks John