What is the ruling on taking precautions against animals killed by vehicles on roads, and how are the vehicle's wheels purified if they run over such animals?

Deceased animals should be avoided if not avoiding them leads to polluting the Muslims' paths. Purifying car tires that have come into contact with moisture from these dead animals is done by pouring water on the impure spot until its substance is removed. However, purifying the tires is not obligatory; rather, what is obligatory is purifying the body, clothing, and place for prayer.