[@Art_Mighty]

Originally Posted by Eurasianman

As far as this goes, I thought it was totally left up to the dealer/service department on whether or not this would void warranty. I had a similar issue with GM with my aftermarket wheels. I had to argue with them that they were the exact same size and offset... Hell, even same rubber that came with the car before they continued to do anymore warranty work on my vehicle.

The original Lemon Law, otherwise known as the federal Magnuson-Moss Warranty Act, 15 U.S.C. § 2301, et. seq., was enacted in 1975 by the United States Congress. The federal Act was created to enhance a consumer’s ability to bring claims for breach of a manufacturer’s warranty. The Act not only regulated the form and content of manufacturers’ warranties, it also made the warranties more enforceable by restricting and regulating the boilerplate disclaimers often found in the fine print of the warranties. The Act further broadened the statutory definition of a warranty to regulate promises to repair, which were often not covered by existing state warranty laws. Importantly, the Act also provided consumers with access to a court of law. Unlike many state laws, the federal Magnuson-Moss Warranty Act allows a prevailing consumer to recover attorneys’ fees and costs. This way, if the consumer recovers relief in a court of law, they don’t have to fork over a chunk of that relief to their attorney.

The part with the dealers being able to use their "discretion" to determine the validity of a warranty claim is insane. Because of the built in mechanisms to recover legal fees built into the Magnuson-Moss Warranty Act you should be able to easily intimidate a manufacture/dealer into reversing an unfavourable position. If the lawyer is willing to take the case the manufacture/dealer will loose more $$$ then the claim their trying to deny.