As far as I know, road damage is not linear to weight, it is exponential. See for example https://www.vabike.org/vehicle-weight-and-road-damage/ https://www.vab

As far as I know, road damage is not linear to weight, it is exponential. See for example https://www.vabike.org/vehicle-weight-and-road-damage/ https://www.vabike.org/vehicle-weight-and-road-damage/ SUV that is 25% heavier than a sedan, destroys the road much quicker than a sedan would.