After the Ford teams reported an aerodynamic deficiency to the remainder of the field during testing, NASCAR allowed them to lower the height of their spoilers by to and wide. This change created further complications for Ford when the manufacturer had to raise the rear deck lid on its vehicle by to in order to comply with the minimum height for its rear spoiler. Later, NASCAR installed an additional template on each of the four types of vehicle in an attempt to ensure the spoiler is positioned correctly.