How do tire categories and snow-performance markings differ, and what can consumers learn from them when comparing year-round tires?

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Hello, when comparing year-round tires, start with their sidewall markings and independent test results. Summer tires specialize in warmer conditions, winter tires in winter conditions, and year-round tires balance these demands. In North American usage, “all-weather” generally describes 3PMSF-marked year-round tires with greater emphasis on snow than conventional “all-season” tires. European all-season tires can also carry 3PMSF. M+S means “mud and snow”, but the marking alone does not require a standardized snow-performance test. The three-peak mountain snowflake symbol, 3PMSF, indicates that a tire meets minimum performance requirements in a standardized snow test. It is not an ice rating or a guarantee of equal performance among marked tires. If you expect occasional snow, I would shortlist 3PMSF options, then compare recent wet-braking, aquaplaning and snow results for your exact tire size. For frequent severe snow or ice, consider dedicated winter tires.