'29 Ford Roadster Pick-Up ... Rubber tires

If you used acrylics, soak in ammonia or windex. If enamel base (freshly painted) try brushing some paint thinner to remove the paint. Only way I know to paint the lettering is with a very fine brush and a steady hand.

Thanks for the reply Plastic!  Unfortunately, being a perfectionist led me to asking this question before I started work.  I did eventually use Tamiya Acrylic Thinner on the tire and removed all paint.  I then bought a 5/0 brush and used the 3x magnifier on my task lamp and forged ahead.  I was surprised at how steady my hand was.  Now the challenge is the smaller lettering opposite the GOODYEAR.  Thanks again!

Your welcome. I use an optivisor for just about any small detailing.

If the letters are raised a fair bit try dry brushing the white.

I never to rarely use magnification as it reduces depth perception in my experiences.

SuppressionFire

I never to rarely use magnification as it reduces depth perception in my experiences.

That's probably because you don't wear tri-focals God bless your eyesight.

A couple of times I have made a stamping tool.  Cut a piece of about 3/16 square balsa about one inch long.  Make sure one cut is very square and flat.  Then, I shake the paint (enamel in my case) and remove the cap, putting it down upside down on bench.  I dip the end of the stamp in cap, the residual amount is typically about the right depth.  Then I stamp onto raised lettering (this only works with the raised stuff, of course).  I don't really know if this is that much better than just painting it- seems so to me but you still need to touch up with fine brush or toothpick.