Stevie- Denatured Rubbing Alcohol is best but very close to it is Motor Spray and after that Lighter Fluid works also. For the Motor Spray you must wipe it off almost as soon as you get it on the entire tire with a good cloth and you will see all of the grime come off. Then I would repeat. If you are going to run the tires again that day let them sit. If you are not going to run them again that same day you can spray them again and just let it soak into the tire and air dry. For the Lighter fluid you do the same as the motor spray but because lighter fluid has some oil in it you really need to let it sit overnight and dry out after you wipe the tire off. Hope this helps.