California Code, Health and Safety Code - HSC § 25215.8

(a) A person shall not manufacture, sell, or install a wheel weight in California that contains more than 0.1 percent lead by weight.

(b) If the department identifies an alternative to lead contained in wheel weights as a chemical of concern pursuant to Section 25252, the lead alternative remains subject to the evaluation process imposed pursuant to Section 25253 to determine how best to limit exposure or to reduce the level of hazard posed by the lead alternative.

(c) This section shall not be construed to restrict the authority of the department pursuant to Sections 25252 and 25253 relating to a chemical or chemical ingredient contained in wheel weights, including, but not limited to, an alternative to lead.