Drag factor (μ)
The effective coefficient of friction between the tyre and the road surface during a braking event. Used in the skid-mark speed formula. Typical values: dry asphalt 0.7-0.8, wet asphalt 0.4-0.5, gravel 0.5-0.6, snow 0.2-0.3.
The effective coefficient of friction between the tyre and the road surface during a braking event. Used in the skid-mark speed formula. Typical values: dry asphalt 0.7-0.8, wet asphalt 0.4-0.5, gravel 0.5-0.6, snow 0.2-0.3.
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