Since I first encountered this type of belt and looked at its construction and material composition many years ago, I have used it exclusively on my 4x4 truck. I've never had a single break. Once, after 3 years, my power steering belt started to diverge along the top layer. I don't know if it was from normal fatigue or if trying to save my 3 straps with tire gel might have caused the rubber to come off. Whatever it was, I found that replacing the belts every 2 years left me with no issues orβ¦