[ERA Chas]

FUN,
That's "Ranger" and it works well and lasts very well.
Tips:
Remove orig letters with lacquer thinner and 4 O steel wool. Won't harm rubber.
Thin 60% with isopropl alcohol. Apply by hand with narrow foam brush. Don't forget the stencil spaces of the original letters. First coat will look thin. Second coat will make them brighter. A third coat and they scream off the tire. Looks too neat IMHO.

Liking the used, race tire original look, I did one thin coat and when dry (1 hour at most) I lightly steel wooled them which made them softer white and let some of the tire surface texture come through. A few weeks of brake dust and exhaust blast and they took on that 'used race car' look. Slightly gray and faded but not that ugly yellow-brown of the original. You can even clean them a little with the isopropl.
You can easily remove with alcohol (but not water) and start over, touch up or renew any time.
Best view is the 1st one in my gallery.