bought them out of desperation in finance. wheels unmanaged from the word, absolutely! they hold neither ice, nor snow, nor porridge, nor even asphalt. you go and constantly think about how the car will behave. constant demolitions, slips always and everywhere. there is no mention of any permeability. I would never wish these wheels on anyone. stand on Mitsubishi Outlander 4WD. more than 20 years of experience.