Check out this white tire paint.

[cobra girl 5]

Hi Kevin,
The first time I used Ranger tire paint was at a car show. One of my customers had tried it and he wanted me to test it out also. I put 2 very light coats on the letters with a small brush that was about 1" wide. I use a spray on shine for tire dressing because some of the wipe on cause the black rubber to smear onto the white. Mine looked great for months but it'll depend on how you drive. If you rub against curbs you'll have to recoat the area. I used soap and water to clean mine but I don't hit curbs or drive on dirt roads. I only get normal road dust. My letters looked soooo much nicer than the stock white. If you lived close by I'd loan you the can to try but I see we aren't close. If you try it, let me know what you think.
Bonnie