Section 34 (Tires & Wheels (Service Information)): Tires: Cleaning
WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Before delivery of a vehicle, remove the protective coating on the tires with white sidewalls or raised white letters. To remove the protective coating, apply warm water and let it soak for a few minutes. Afterwards, scrub the coating away with a soft bristle brush. Steam cleaning may also be used to remove the coating.
CAUTION:
DO NOT use gasoline, mineral oil, oil-based solvent or a wire brush for cleaning.