Tennessee Code Title 55. Motor and Other Vehicles § 55-5-107

(a) The identification numbers required by § 55-5-106 shall be placed upon the passenger car and components required to be numbered in a permanent manner so that any attempt to remove, alter, deface, obliterate or destroy them will be ascertainable.

(b) The permanent manner required by §§ 55-5-106 -- 55-5-110 may be by any suitable manufacturing process that will result in the number becoming a permanent part of the passenger car or component. They shall be of a height and width easily readable by the naked eye. They may consist of letters, numbers, digits or any combination of them.

(c) The identification numbers required by § 55-5-106 may be in accordance with recommended practices approved by the Society of Automotive Engineers as to material, lettering, manufacturing and installation.

(d) The identification numbers required by § 55-5-106 shall be placed upon the passenger car and required component parts by the manufacturer.