2005 Washington Revised Code RCW 46.04.272: Lightweight stud.

"Lightweight stud" means a stud intended for installation and use in a vehicle tire. As used in this title, this means a stud that is recommended by the manufacturer of the tire for the type and size of the tire and that:

     (1) Weighs no more than 1.5 grams if the stud conforms to Tire Stud Manufacturing Institute (TSMI) stud size 14 or less;

     (2) Weighs no more than 2.3 grams if the stud conforms to TSMI stud size 15 or 16; or

     (3) Weighs no more than 3.0 grams if the stud conforms to TSMI stud size 17 or larger.

     A lightweight stud may contain any materials necessary to achieve the lighter weight.

[1999 c 219 § 1.]