SONAX XTREME Wheel Cleaner PLUS is a powerful special cleaner for perfect cleaning results. Thanks to the optimum adhesion and the self-active cleaning, easily dissolves even stubborn dirt such as baked-on brake dust, oil and rubber residue and other road dirt. Does not attack the rim surface or the wheel bolts. Suitable for wheels with TPMS (tire-pressure monitoring system). With activity indicator: on contact with soil, the cleaner’s color turns red to indicate its full effect. With pleasant fragrance. Skin-neutral pH.