👉 plainback is a term in English language that refers to a type of flat tire. It is a flat tire that appears to be flat but actually has a large hole or bulge at the bottom. Plainbacks are often caused by blowouts, sudden changes in direction, or other conditions that cause the wheel to spin rapidly and produce a loud pop sound when the tire is popped off. Plainbacks can occur on any type of vehicle, including motorcycles, trucks, cars, and even boats. They