We get this question every so often from dealers. Our wheel weight adhesive is made in large bulk amounts and is regularly tested to make sure it is of proper specification. It is extremely unlikely that there is a problem with the wheel weights you have received. What we have found is the common problem with lack of adhesion is the process the user is following in cleaning the wheel. Contact and carb cleaners can have components that will leave hard to detect residues that will destroy adhesives. Even chemicals your shop may have been using for years may now be a problem, because with changing government VOC regulations, solvent companies are constantly changing their formulations to remain in compliance.

When applying wheel weights to a wheel, the wheel must be clean, dry, and free of solvents and oils and at a minimum temperature. Motion Pro recommends using a water based cleaner like Formula 409 to remove grease and dirt, and then wipe down the wheel with Isopropyl Alcohol (not the same as denatured alcohol, which should not be used) to make sure of a clean and dry surface for application of the wheel weights. Minimum temperature for application of wheel weights should be at least 60 degrees Fahrenheit. Some solvents and contact cleaners may leave a residue behind that will prevent proper adhesion of the wheel weights. Removal of old adhesive can be easily accomplished with a citrus based solvent, do not use products like WD40 to remove the old adhesive, as it will leave a significant oily residue behind that will prevent proper adhesion. Temperatures below 60 degrees F will not allow proper adhesion of the wheel weights, and keep in mind that any solvents used will evaporate slower at lower temperatures, so allow more time at low temps when cleaning wheels.