Most car front bumpers are relatively low to the ground and we suggest you rotate and install 4Bumpers® with the rounded guard in the "upper" position. SUV and minivan license plates are typically higher and we suggest that you rotate and install 4Bumpers® with the rounded guard in the "lower" position. We recommend the use of a flat license plate mounting bracket when installing your 4Bumpers® unit-many vehicles already come equipped with such devices.