My latest dealer quote "All warranty void due to excessive weight, oversize tires, and aftermarket suspension" WTF Toyota. I guess I can quote 'Oh what a feeling"
I think you may want to read up on (please forgive the spelling) Magnuson Furgeson act of like 1976??? It's all about how a dealer can't void the entire warranty because of non dealer options. Now if you have a vehicle and your jumping it and the inner fenders are cracked then I wouldn't expect them to cover you. But they can't void like your powertrain warranty because you have addons.