Clean heavily soiled tyres e. g. with SONAX XTREME Tyre+Plastic Cleaner (Art. No. 02694000) and allow to dry. Do not apply to the tyre tread, the brake system or the floor (e. g. risk of slipping!) — cover the floor, if necessary. Apply gel lengthwise onto a SONAX Tire Brush (Art. No. 04190410) and spread evenly on the tire sidewall, massaging it in. If necessary, repeat this procedure until achieving the desired degree of shine. Move the vehicle slightly to treat the lower side of the tyres. Not suitable for motorbikes or bicycles.