Parts & Accessories Rounds For sale, a set of Duro balloons. 4 pieces, rim size 18. Manufactured date 23. One of them is new, hasn't driven 3000 km. The reason for selling is that the balloons are known to cause vibration. And its summer standing, to be honest, I move the car an inch and turn it off. It gives a look to the GMC HD and large vans, fills the fender and satisfies your eye.