They are what they sound like, tires that are very resistant to flats from going over rough terrain or sitting in your garage. (geekwrapped.com)
Your vehicle's suspension system is made up of many components designed to adjust when driving over rough terrain, to ensure a comfortable ride. (yourmechanic.com)
This is useful when traveling over rough terrain and makes the stroller easier to push over this kind of surface. (strollerdiva.com)