BMW E60 M5 Spark Plug Replacement DIYIn case you own a BMW E60 M5, you already know that every 37,000 miles (60,000 km) you have to change your spark plugs. It's not so often, but if you really ...

Spark plugs are an integral part of your engine, but they need to be replaced every so often. We'll tell you how to find out and what socket size you'll need.