If you need to put them on the sides of the car, the double sided tape does not cut it. I have been seeking the perfect recipe to keep them on and now I found it...windshield glue. It's actually a polyurathane and works best with poly body kits but the best part is YOU CAN PAINT IT! Two years with double sided tape coming off, one with silicone, and now windshield glue...who would have known! Hopefully my fourth year with this kit will keep me happy. Nothing but trouble these things.