What tire label is an instant cause for rejection?

The label "Not for Highway Use" is an instant cause for rejection because it indicates that the tire is not designed or approved for use on public roads. Tires that are labeled in this manner may not meet the necessary safety standards, which can increase the risk of tire failure while driving on highways or streets. This label signifies to inspectors that the tire could compromise the safety of the vehicle and its passengers if used on public roadways, therefore making it unsuitable for legal and safe operation.

In contrast, labels such as "Load Range E," "All-Terrain," or "Mud and Snow" typically refer to the tire's specific capabilities or classifications but do not inherently indicate safety issues. These labels could describe the tire's load capacity, its versatility for different terrain types, or its suitability for certain driving conditions, thus making them acceptable for use as long as they are in good condition and appropriate for the vehicle.