Lettering looks good!

 

Hope the letters hold up! I painted my letters once but it didn't last long. I'm guessing the paint wasn't flexible enough to cope with tire roll and flex. It started to peel within a week. What paint did you use?

 

These paint crayons might be a viable option:

Carmel Tire Marking Crayons

 

I just used a paint marker by elmers from Walmart and its got 5 coats. I don't drive it a whole lot and always take good care of the tires. I will let you all know how it works. I did my wife's car in yellow and it worked really well. I figure I may have to hit them again after every couple weeks just do brighten them up.

 

I've been thinking of doing tire coloring for a while but alot of them don't last more than a couple of days from what I've read. Keep us informed.