[IDBMW]

Originally Posted by HT1000

Any modifications to the vehicle - per your warranty are a bases for BMW to decline warranty coverage on the area of the warranty impacted by the modification. Tires, wheels and springs would definitely allow BMW to decline warranty coverage on the entire suspension system.

Intake and exhaust mods would allow BMW to decline all engine/trans/diff warranty coverage. The mods do not need to be the cause of a problem to decline warranty. If you read your limited new vehicle warranty it specifically states that alterations can be grounds for declining warranty coverage. It's quite clear and people have warranty coverage declined weekly for these types of modifications.

The limited new vehicle warranty that BMW provides to you is for the vehicle in the exact specifications it was manufactured and delivered to you, not to some altered configuration, which is why the alteration clause exists in your warranty. Your warranty is a conditional warranty. If you want to retain the warranty then you can't altered the vehicle.

So using your model I change my oil and use Mobile 1 Synthetic oil and a Fram oil filter. 2,000 miles later my engine spins a bearing or even blows the engine. BMW would void my warranty for using Mobile 1 Synthetic oil and a Fram oil filter? I don’t think so! They would have to prove those parts caused the failure. Let’s say BMW does say the Fram filter caused the failure. I would bet Fram would support you in the charges. However you install a tuner and the engine blows I bet the company that made the tuner is not going to support you?
It is the law through the Magunson-moss act that I have the right to put other company’s parts in my car and it is very easy for the car manufacture to say the part caused the failure when in fact it may not be the reason for the failure. To me this is where it gets difficult and I do not want to spend the money or time to fight them over the mods that may or may not contributed to a failure so we do what we have to.