Do I need to sand the tyre sidewall prior to application?
Yes! This is a very important step to ensure a proper and strong bond to the raised rubber lettering. Roughen out the sidewall where you are going to apply the raised rubber lettering.
Use what you're comfortable with, you can use a Dremel tool with a flap disc attachment (also available in our shop )
Or go for something more heavy duty like a grinder with a flap disc attachment (see below). Please only use this method if you're comfortable using this tool, you are are only smoothing the tyre wall and creating a key in the surface, at most you'll be taking 0.5mm off the tyre wall, DO NOT go through the tyre wall as that will damage the tyre.