Modern automotive cockpit design trends have increased the number of displays and the locations and manner in how they are packaged. One theme in particular is the packaging of the displays in novel locations that may be marginal in terms of dynamic stability during road load vibrations. Examples of this include mirror or deployable displays that adjust their position in the vehicle. The image of the display may be partially or fully blurred during vibration events which can produce a poor HMI experience. This paper will present the results of a HMI study that that evaluated the readability of different sizes and contrast ratios of TFT color display graphics via jury evaluation during varying vibration acceleration and frequency levels in a controlled lab environment. The result of this study was identification of minimum natural frequencies and maximum acceleration levels for the display mounting structure as a function of display graphics size and contrast ratios. This information is intended to be used by designers of the cockpit structures that package the displays as well as guidance for the HMI design of the display graphics.