våtgreppsindex

Våtgreppsindex, often abbreviated as VGI, is a metric used to quantify the performance of tire treads in wet conditions. It is a measure of a tire's ability to maintain grip and traction on a wet road surface, which is crucial for safe driving. A higher våtgreppsindex indicates better performance in wet conditions, meaning the tire can more effectively channel water away from the contact patch and resist hydroplaning.

The våtgreppsindex is typically determined through standardized testing procedures. These tests often involve measuring the tire's braking distance or acceleration on a wet surface under controlled conditions. Different organizations and tire manufacturers may use slightly varied methodologies, but the underlying principle remains consistent: assessing how well the tire displaces water and maintains contact with the road.

Tire manufacturers use the våtgreppsindex as a key performance indicator during the design and development of new tire models. Consumers can also refer to the våtgreppsindex, often displayed on tire labels or in product specifications, to make informed purchasing decisions, especially for those who frequently drive in rainy climates. A good våtgreppsindex contributes significantly to overall tire safety, particularly during emergency braking situations.