Winnipeg, Manitoba — Based on analysis of claims received by Manitoba Public Insurance (MPI) between November and March, the public insurer has found that winter tire use reduces collision claim frequency by 6.3 percent.
The analysis was based on collision claims over the insurance years 2011/2012 through 2017/2018. Frequency was measured by comparing claim frequency before and after a winter tire purchase for 111,872 vehicles.
Of the 111,872 vehicles studied, there were 13,025 winter-month claims occurring before winter tires were installed, and 9,802 winter-month claims occurring after winter tires were installed, said the report.
MPI also found that, at temperatures just below freezing on dry pavement, winter tires have been shown to reduce stopping distances by as much as 30 percent compared with all-season tires.