NightRiderQ45 wrote:Driving on horrible roads is bad for your suspension/steering and tires if you hit a large pothole. Your car manual also states that you shouldn't use any type of fuel injector cleaner but we know that isn't smart. I don't have issues with the product spraying all over my car. If you put a moderate amount on the tires and let the product dry before driving, you shouldn't have any issues. At least I don't.
Take a chill pill dude. I'm telling you what the manual says, and the fact that the oil based ones can errode both the paint and the rubber. Water based ones are better, but die off quicker - as is true of any other cosmetic enhancement that is water based.
To the OP - Tires come from the maunfacturer with protective coats on the sidewalls to ensure the "black" stays nice for longer periods of time. There is almost no real "need" to add the stuff, unless you want the "wet" look on your tires. Be careful applying if you do as to not get it on the tread, as this can cause slipping since most of these products are oil based.