I have studded tires installed on my vehicle. Are they legal in California? When?
The California Vehicle Code [Section 27454 (e)], permits studded tires to be used on vehicles between November 1 and April 30 of each year. The number of studs or the percentage of metal in contact with the roadway cannot exceed three percent of the total tire area in contact with the roadway.
Since there could be some confusion on this issue, you may wish to write to the CHP. That way you will receive an official response that you can carry in your vehicle. The mailing address is:
California Highway Patrol
Office of Public Affairs
P. O. Box 942898
Sacramento, CA 94298-0001