Bent lock rings: Question Bent lock rings: Answers Are acceptable. Are not a concern in dry weather. Are dangerous. Can lengthen tire life. Explanation Mismatched, bent, or cracked lock rings are dangerous and should not be used. This questions appears in the following tests: Connecticut Passenger District Of Columbia Class A Knowledge Test District Of Columbia Passenger Illinois Class A Knowledge Test Indiana Passenger Massachusetts Class B Knowledge Test Oregon Class B Knowledge Test West Virginia Class A Knowledge Test