The truth about the deficiencies of All-Season Radial Tires—why you are required to have four winter tires with the Snowflake/Mountain Symbol and a minimum of 3.5 mm of tread on the Cypress Bowl Road.
*Note the M/S symbol on all four tires with 3.5 mm of tread is also currently considered legal but these tires are not as effective as good tread Winter Tires with the Mountain/Snowflake symbol.
For the safety of all road users, Winter or M+S rated tires are mandatory for vehicles on Cypress Bowl Road at all times from October 1st to March 31st. Winter rated tires are strongly recommended during snowfall events. This regulation is by order of the BC Highways Ministry and is subject to enforcement by West Vancouver Police.