Q: Will these springs void my Tesla warranty, and does Tesla warranty them?

We cover this spring kit with our own 2-year product warranty; Tesla only warranties parts they manufacture, so they will not service a non-Tesla spring. As for the rest of the car, the Magnuson-Moss Warranty Act means your overall warranty is not voided just for fitting aftermarket springs, though a manufacturer can charge you for a repair if your change directly caused it. We are enthusiasts and owners, not lawyers, so read the law and your warranty documents.