When it comes to adding armor to a vehicle, the extra weight can differ a lot depending on how much protection is needed. For regular levels of safety, the additional weight usually falls between 600 to 1500 pounds. However, for heavier-duty vehicles meant for military or police use, the added weight can be much greater.
It's crucial to keep in mind that the weight of the armor is specially calculated to make sure it doesn't exceed the vehicle's weight limit, known as the Gross Vehicle Weight Rating (GVWR). Going over this limit can make the vehicle harder to control, affect its braking, and compromise safety. So, ensuring that the vehicle stays within this weight limit is a top priority when adding armor.