I've owned 3 vehicles with cam chains. All of them have over 320,000 km (200k miles). None of them have had issues with the chain or the tensioner. That could

I've owned 3 vehicles with cam chains. All of them have over 320,000 km (200k miles). None of them have had issues with the chain or the tensioner. That could be a testament to old Japanese engines (specifically Nissan) though, two from 1996 and one from 1982.