These high-quality paint pens will result in high-quality, long lasting color to brighten your tires. The newer your tires, it may take fewer coats to get the brightest look possible for your truck. We do recommend that you purchase extra pens for touch-ups after you've run the truck for awhile. These pens are generally quite weather resistant, but keep in mind that rain, snow, salt, and other road grime will eventually wear off even the best quality paint. It is best to apply this paint in 70 to 75 degree weather. If it is too hot or cold outside, the application may take longer to dry or the pen may gunk up easily due to weather conditions. Allow plenty of time between coats for optimal application.