hi mate, you wont damage the stickers so dont worry about anything. if you use tar and glue remover then get it off quickly before it does damage if the stickers are vinyl but you can use it. look for a concept chemicals supplier in your area and use 'vision' polish, vista for the plastics, contour for the tyre dressing and any other products made for the areas you want to sort on your car, dont waste your time on autoglym its poope they just market it well.