autozone sells a paint pen that you can use. it works for a little bit, but ultimately everything will end up fading and looking like crap. its because the tires soak up all of the oil and stuff from the ground. the only way to get the letters white and not fade or get dirty is to actually apply extra rubber in the color you want to the tires. check out ammo nyc on youtube the guy goes in depth about it *racecar* and even shows you where you can buy the *racecar* rubber to apply to your *racecar* car
https://www.youtube.com/watch?v=Kvd0uRljLmg
There's a place that sells letters for the tires. Like searching for parts at a part store, put ya tires make and model in. And they send you the letters for it. My buddy did it on his GT500. Paid out the ass, its like upwards of 100 bones a tire. Permanent too. But **** that.
so from what ive been researching it seems only import guys do this.........
I have nitto's 555's on the rear so when I get the matching fronts ill try thatRustoleum white paint markers. I've had to touch them up a couple of times but work pretty good