If you want to use a suction cup mount but do not have a smooth surface that the suction cup can adhere to, order this Suction Cup Base Plate.
The plastic Base Plate is held down using a "peel and stick" double sided semi-permanent adhesive disk - 3M VHB™ (very high bond) tape. This creates a smooth place to attach your suction cup.
Used on metal, plastic or many dash panel surfaces that are not quite smooth enough for the suction cup to mount normally. Simply stick the the plate to the bondable surface and then attach the suction cup to the plate.