M+S or Winter tires required in western U.S.?
I did a search of DOT websites. It appears M+S or winter (mountain-snowflake marked) tires are not required in WA, ID, MT, UT, CA, NV, AZ unless conditions warrant authorities to require them i.e....
Forum Discussion
Yes, the last braking axle must have drag chains.
If you have four wheel drive, you must also carry chains during winter months.
If you have four wheel drive, you must also carry chains during winter months.
