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View Full Version : Truth About Timing Chains/Belts?


wishihad50k
04-25-2005, 11:58 AM
Whats the truth about my 95 525i's timing chain/belt? I have heard that its a belt and Ive been told its a chain? Do they need to be replaced? I have been told yes replace them at 80K and I have been told that you dont need to ever replace them? School me on this! Thanks!
Jeff N.
04-25-2005, 12:07 PM
Chain on that car. Should last forever, not an interval service item.
billb
04-25-2005, 12:31 PM
Chain on that car. Should last forever, not an interval service item.

If it's anything like the chain on my M42 318is, which has about a 100k-125k mile lifespan on chain/tensioners. On that one, all tensioners, guides, and sprockets need refreshing about that time. They get really noisy, and you risk jumping a sprocket and crashing the pistons.